MLSession:ForwardAsync

data

MLSession

Object is the base class for all classes in the Roblox class hierarchy. Every
other class that the Roblox Engine defines inherits all of the members of
Object. It is not possible to directly create Object.


This sample demonstrates the subtleties of the Changed event on normal objects
and "-Value" objects.

This code sample demonstrates the Changed event firing within a parent object.

This event fires immediately after an object property is changed and it
works with most use cases (see limitations below). The new value of a
changed property is **not** passed in as a parameter, so it must be
accessed by using `object[property]`. For example:

```
object.Changed:Connect(function(property)
	print("The new property's value is", object[property])
end)
```

If you are only interested in listening to the change of one specific
property, consider using the
`Class.Object:GetPropertyChangedSignal()|GetPropertyChangedSignal()`
method instead.

For `Class.ValueBase` objects such as `Class.IntValue` and
`Class.StringValue`, this event only fires when the object's `Value`
property changes. To detect other changes in `Class.ValueBase` objects,
use `Class.Object:GetPropertyChangedSignal()|GetPropertyChangedSignal()`
instead.

#### Limitations

This event does **not** fire for physics-related changes, such as when the
`Class.BasePart.CFrame|CFrame`,
`Class.BasePart.AssemblyLinearVelocity|AssemblyLinearVelocity`,
`Class.BasePart.AssemblyAngularVelocity|AssemblyAngularVelocity`,
`Class.BasePart.Position|Position`, or
`Class.BasePart.Orientation|Orientation` properties of a `Class.BasePart`
change due to gravity. To detect changes in these properties, consider
using a physics-based event like `Class.RunService.PreSimulation`.

Additionally, this event may not fire on every modification of properties
that change very frequently, and/or it may not fire for such properties at
all. It's recommended that you carefully test for property changes that
impact game logic.


Object.Changed

property

Fired immediately after a property of the object changes, with some
limitations.


This code sample demonstrates how to save a value before a changed event fires
on it in order to get more information about a change.

This code sample demonstrates the equivalence of the `Changed` event and event
returned by `GetPropertyChangedSignal`.

This method returns an event that behaves exactly like the
`Class.Object.Changed|Changed` event, except that it only fires when the
given property changes. It's generally a good idea to use this method
instead of a connection to `Class.Object.Changed|Changed` with a function
that checks the property name. Subsequent calls to this method on the same
object with the same property name return the same event.

`Class.ValueBase` objects, such as `Class.IntValue` and
`Class.StringValue`, use a modified `Class.Object.Changed|Changed` event
that fires with the contents of their `Value` property. As such, this
method provides a way to detect changes in other properties of those
objects.

Note that this event will not pass any arguments to a connected function,
so the value of the changed property must be read directly within a
script.

#### Limitations

The event returned by this method does **not** fire for physics-related
changes, such as when the `Class.BasePart.CFrame|CFrame`,
`Class.BasePart.AssemblyLinearVelocity|AssemblyLinearVelocity`,
`Class.BasePart.AssemblyAngularVelocity|AssemblyAngularVelocity`,
`Class.BasePart.Position|Position`, or
`Class.BasePart.Orientation|Orientation` properties of a `Class.BasePart`
change due to gravity. To detect changes in these properties, consider
using a physics-based event like `Class.RunService.PreSimulation`.

Additionally, the returned event may not fire on every modification of
properties that change very frequently, and/or it may not fire for such
properties at all. It's recommended that you carefully test for property
changes that impact game logic.


Object:GetPropertyChangedSignal

A signal that fires whenever the property changes.


Get an event that fires when a given property of the object changes.


Demonstrates determining the class of Workspace using `Class.Instance:IsA()`

Workspace is of class 'Workspace', so the first statement is true.
Workspace is not of class 'BasePart', so the second statement is false.
Workspace inherits from Instance and therefore is of class 'Instance', so the third statement is true.

IsA returns true if the object's class is **equivalent to** or a
**subclass** of a given class. This function is similar to the
**instanceof** operators in other languages, and is a form of
[type introspection](https://en.wikipedia.org/wiki/Type_introspection). To
ignore class inheritance, test the `Class.Object.ClassName|ClassName`
property directly instead. For checking native Luau data types (number,
string, etc) use the functions `type` and `typeof`.

Most commonly, this function is used to test if an object is some kind of
part, such as `Class.Part` or `Class.WedgePart`, which inherits from
`Class.BasePart` (an abstract class). For example, if your goal is to
change all of a character's limbs to the same color, you might use
`Class.Instance:GetChildren()|GetChildren` to iterate over the children,
then use IsA to filter non-`Class.BasePart` objects which lack the
`Datatype.BrickColor` property:

```lua
local Players = game:GetService("Players")

local function paintFigure(character, color)
	-- Iterate over the child objects of the character
	for _, child in character:GetChildren() do
		-- Filter out non-part objects, such as Shirt, Pants and Humanoid
		-- R15 use MeshPart and R6 use Part, so we use BasePart here to detect both:
		if child:IsA("BasePart") then
			child.BrickColor = color
		end
	end
end
paintFigure(Players.Player.Character, BrickColor.new("Bright blue"))
```

Since all classes inherit from `Class.Object`, calling
`object:IsA("Object")` will always return true.


Object:IsA

className

The class against which the Object's class will be checked.
Case-sensitive.


Describes whether the Object's class matched or is a subclass of the
given class.


Returns true if an object's class matches or inherits from a given class.


Object:isA

Object

A read-only string representing the class this `Class.Object` belongs to.

This property can be used with various other functions that are used to
identify objects by type, such as `Class.Object:IsA()` or
`Class.Instance:FindFirstChildOfClass()`.

Note this property is read only and cannot be altered by scripts.
Developers wishing to change an object's class will instead have to create
a new `Class.Object`.

Unlike `Class.Object:IsA()`, ClassName can be used to check if an object
belongs to a specific class ignoring class inheritance. For example:

```
for _, child in workspace:GetChildren() do
    if child.ClassName == "Part" then
        print("Found a Part")
        -- will find Parts in model, but NOT TrussParts, WedgeParts, etc
    end
end
```


Object.ClassName

A read-only string representing the class this `Class.Object` belongs to.


Object.className

Object is the base class for all classes in the Roblox class hierarchy.


Luau

Dictionary

An object that runs connected functions upon a specific occurrence.

Data Type

RBXScriptSignal

Data type having a value of either true or false.

boolean

A sequence of characters, such as letters, numbers, and symbols.

string

Overview

Experiences

Avatar

Assets

Open Cloud

Create

Discovery

Localization

Analytics

Design

Scale

Affiliates

Monetize

Education

This method is asynchronous and returns an `Operation`, which represents the current state of the operation. It contains an endpoint path that you can poll to obtain the real response and applicable metadata. See the [documentation]({longRunningOperationsLink}) on long-running operations for more information.
            
The following sections describe the response and metadata objects that are provided when an operation completes.

Beta endpoints are ready for public use. Breaking changes are possible but rare.

This field may be set when creating a resource, but may not be modified by subsequent requests.

These fields may be set when creating a resource, but may not be modified by subsequent requests.

This field may be provided in requests, but will never be included in responses.

Per API Key: {maxInPeriod} requests every {periodInSeconds} seconds per IP Address

This field may be set on responses, but will be ignored in requests.

Note: Rate limits can be lower during high-traffic periods. Certain endpoints have additional rate limits. [Learn more about rate limits]({link}).

{limit} requests per day across all API keys for a user or group

{limit} requests per hour across all API keys for a user or group

{limit} requests per minute across all API keys for a user or group

{limit} requests per second across all API keys for a user or group

{limit} requests per minute per API key owner

{limit} request(s) per second per API key owner

The following API key permissions are required to call this endpoint. For more
information on generating proper keys, see [Manage API keys]({apiKeyReferenceDocLink}).

The following endpoints are available at paths relative to the base URL.

This string is formatted as a [FieldMask](/cloud/reference/types#fieldmask).

A JSON value can be `null`, `boolean`, `string`, `number`, `array`, or `object`.

The following scopes are required for your OAuth 2.0 application to use this endpoint. For more information on how to register an OAuth 2.0 application, see [App registration and review]({oauth2ReferenceDocLink}).

The following objects describe payloads that are accepted or returned. See each individual endpoint for more information on when these objects are used.

This string is formatted as a [Timestamp](/cloud/reference/types#timestamp).

The following scopes are required for your OAuth 2.0 application to use this endpoint. For more information on how to register an OAuth 2.0 application, see [App Registration and Review]({oauth2ReferenceDocLink}).

This allows viewing information about your assets.

This allows uploading and updating assets to Roblox.

This allows granting asset permissions to any subjects (including groups and experiences) and assets your account has access to.

Grants the ability to update badges owned by the user.

This allows viewing information about your commerce items.

This allows editing of your commerce merchant connections.

This allows you to view information about your Creator Store products.

This allows you to modify information about your Creator Store products.

This allows viewing information about your communities.

This allows you to manage community join requests and role updates of lower-ranked community members for your account.

This allows viewing information about your inventory.

Grants access to mange your badges and spend robux.

Grants access to manage your developer products.

Grants access to read information about the experiences you have notifications on for.

Grants access to turn on or off notifications for experiences on your behalf.

Grants access to manage your communities.

Grants permission to read community information.

Grants access to read and write your localization tables

Grants access to manage team collaboration for all experiences you own.

Grants access to manage your experiences and certain information associated with your experiences (e.g. localization information).

Grants access to read your experiences' localization information.

Grants access to modify your experiences' localization preferences.

Grants access to manage your user account.

Grants access to modify user localization preferences.

This grants the ability to publish messages on behalf of users.

This allows sending notifications from your experience to users.

This allows listing secrets associated with your experience.

This allows creating and updating secrets associated with your experience.

Grants access to read about your subscription products.

Grants the ability to read place information.

Grants the ability to edit place information.

This operation grants access to publish new versions of experiences to Roblox.

Grants the ability to read experience information.

Grants the ability to edit experience information.

Allows you to view user restrictions in the experience.

Allows you to edit user restrictions in the experience.

Grants the ability to read user's premium and verified status.

This allows you to view a user's social accounts.

This enables Single Sign-On functionality.

This grants access to read your profile information.

This function returns immediately if possible, but can yield the thread that called it until it can return a value.

{nameStart}name{nameEnd} is no longer supported or maintained by Roblox.

This math operation is no longer supported or maintained by Roblox.

This member doesn’t appear in the object browser and is not intended for widespread use.

This member is only accessible only through the command bar. Attempting to access this member from scripts causes an error.

This function can’t pause the Lua thread that called it.

Attempting to access this member in scripts causes an error. You might be able to access this member from Roblox Studio's property window.

This member doesn’t appear in Roblox Studio’s Object Browser.

You can’t create an instance of this class with the Instance.new constructor.

Roblox does not replicate this member across its server-client boundary.

Lua code can’t access this member. You might be able to change its value from the property window in Roblox Studio.

This member is accessible from OpenCloud Luau execution tasks.

This object’s replication behavior is dependent on the player who owns it.

This member is accessible through the command bar and plugins. Attempting to access this member from scripts causes an error.

This member is read only. Attempting to write to this member causes an error.

This property is read-only and is safe to read in unsynchronized threads. Attempting to write to it causes an error.

This member is accessible only in CoreScripts.

Only Roblox CoreScripts can access this member, and it isn’t usable by Players.

You can read and write to this property safely from multiple threads.

This class is a top-level singleton. Retrieve an instance of this class with the GetService function.

Multiple threads can potentially write to this property, so it’s unsafe to read from unsynchronized threads.

This function pauses the Lua thread that called it until it returns a result. This doesn’t interrupt other scripts.

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Learn how to create successful ads that drive traffic to your creations

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Participate in community events held by other Creators

Find tutorials written by the Creator community

Learn how to implement a Connection invite reward system

Keep players engaged and monetized with content updates

Captivate your audience with an enjoyable gameplay cycle

Drive engagement and progress with fun, repetitive gameplay

Kick off your creator journey by making your very first place.

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Jessica is the designer behind imaginative environments like in Alo Yoga

Jenni is the UGC creator and artist behind many popular collaborations

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Stephen shares their love of programming tools

Sam shares how they got started designing fashion items that they wish existed

All objects that make up a 3D world, such as parts and lighting

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This walkthrough covers attachments, beams, and some basic scripting concepts that shows you how to set player health to 0 if they touch something

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Microprofiler provides timing information for the task scheduler

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@minty creates an obby live from scratch using suggestions from chat

Our platform provides you with unparalleled opportunities to create. Get started by exploring the Creator Hub, Roblox Studio, and our vibrant Creator community.

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Our community of award-winning studios and self-taught creators all started here, just like you. 

A principal environment artist at Roblox covers how and why to use packages

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Staff stream about gravity, material properties, and constraints

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Experiences like {boldStart}{experienceName}{boldEnd} saw an average +8.5% lift in qualified play through rate with personalization.

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Staff stream covering parts, meshes, terrain, and lighting

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Your world is waiting! Let’s create something epic.

Intro to texturing for UGC ft. Madison_Hatter2

MLSession

Summary

Properties

Methods

Events

Properties

Methods

Events