---
name: BindableEvent
last_updated: 2026-06-10T23:09:11Z
inherits:
  - Instance
  - Object
type: class
memory_category: Instances
summary: "An object which enables custom events through asynchronous one-way communication between scripts on the same side of the client-server boundary. Scripts firing a BindableEvent do not yield."
---

# Class: BindableEvent

> An object which enables custom events through asynchronous one-way
> communication between scripts on the same side of the client-server boundary.
> Scripts firing a [BindableEvent](/docs/reference/engine/classes/BindableEvent.md) do not yield.

## Description

The **BindableEvent** object enables custom events through asynchronous
one-way communication between scripts on the same side of the
[client-server](/docs/en-us/projects/client-server.md) boundary. When you fire a
[BindableEvent](/docs/reference/engine/classes/BindableEvent.md) through the [BindableEvent:Fire()](/docs/reference/engine/classes/BindableEvent.md) method, the
firing script does **not** yield and the target function receives the passed
arguments with certain [limitations](#argument-limitations).
[BindableEvents](/docs/reference/engine/classes/BindableEvent.md) create threads of each connected
function, so even if one firing errors, others continue.

As an alternative for two-way communication between two scripts on the same
side of the client-server boundary, consider [BindableFunction](/docs/reference/engine/classes/BindableFunction.md).

As stated, [BindableEvents](/docs/reference/engine/classes/BindableEvent.md) do not allow for communication
between the server and clients. If you are looking for this functionality, use
a [RemoteEvent](/docs/reference/engine/classes/RemoteEvent.md) as outlined in
[Remote Events and Callbacks](/docs/en-us/scripting/events/remote.md).

See [Bindable events and callbacks](/docs/en-us/scripting/events/bindable.md) for
code samples and further details on [BindableEvent](/docs/reference/engine/classes/BindableEvent.md).

#### Parameter Limitations

Any type of Roblox object such as an [Enum](/docs/reference/engine/datatypes/Enum.md), [Instance](/docs/reference/engine/classes/Instance.md), or
others can be passed as a parameter when a [BindableEvent](/docs/reference/engine/classes/BindableEvent.md) is fired, as
well as Luau types such as numbers, strings, and booleans, although you should
carefully explore the
[limitations](/docs/en-us/scripting/events/bindable.md#argument-limitations).

## Methods

### Method: BindableEvent:Fire

**Signature:** `BindableEvent:Fire(arguments: Tuple): ()`

Fires the [BindableEvent](/docs/reference/engine/classes/BindableEvent.md) which in turn fires the
[Event](/docs/reference/engine/classes/BindableEvent.md) event. This method does not yield, even
if no script has connected to the event, and even if a connected function
yields.

Any type of Roblox object such as an [Enum](/docs/reference/engine/datatypes/Enum.md), [Instance](/docs/reference/engine/classes/Instance.md), or
others can be passed as a parameter to
[Fire()](/docs/reference/engine/classes/BindableEvent.md), as well as Luau types such as
numbers, strings, and booleans, although you should carefully explore the
[limitations](/docs/en-us/scripting/events/bindable.md#argument-limitations).

See [Bindable events and callbacks](/docs/en-us/scripting/events/bindable.md)
for code samples and further details on
[Fire()](/docs/reference/engine/classes/BindableEvent.md).

*Security: None · Thread Safety: Safe*

**Parameters:**

| Name | Type | Default | Description |
|------|------|---------|-------------|
| `arguments` | `Tuple` |  | Values to pass to [Event](/docs/reference/engine/classes/BindableEvent.md) events connected to the same [BindableEvent](/docs/reference/engine/classes/BindableEvent.md). |

**Returns:** `()`

## Events

### Event: BindableEvent.Event

**Signature:** `BindableEvent.Event(arguments: Tuple)`

Fires when any script calls the [Fire()](/docs/reference/engine/classes/BindableEvent.md) method
on the same [BindableEvent](/docs/reference/engine/classes/BindableEvent.md) instance, using the same arguments as
parameters.

See [Bindable events and callbacks](/docs/en-us/scripting/events/bindable.md)
for code samples and further details on [Event](/docs/reference/engine/classes/BindableEvent.md).

*Security: None*

**Parameters:**

| Name | Type | Description |
|------|------|-------------|
| `arguments` | `Tuple` | The parameters sent through [Fire()](/docs/reference/engine/classes/BindableEvent.md). |

## Inherited Members

### From [Instance](/docs/reference/engine/classes/Instance.md)

- **Property `Archivable`** (`boolean`): Determines if an Instance and its descendants can be cloned using
- **Property `archivable`** (`boolean`):  *(deprecated, hidden)*
- **Property `Capabilities`** (`SecurityCapabilities`): The set of capabilities allowed to be used for scripts inside this
- **Property `Name`** (`string`): A non-unique identifier of the Instance.
- **Property `Parent`** (`Instance`): Determines the hierarchical parent of the Instance.
- **Property `PredictionMode`** (`PredictionMode`): 
- **Property `RobloxLocked`** (`boolean`): A deprecated property that used to protect CoreGui objects. *(hidden)*
- **Property `Sandboxed`** (`boolean`): When enabled, the instance can only access abilities in its `Capabilities`
- **Property `UniqueId`** (`UniqueId`): A unique identifier for the instance.
- **Method `AddTag(tag: string): ()`**: Applies a tag to the instance.
- **Method `children(): Instances`**: Returns an array of the object's children. *(deprecated)*
- **Method `ClearAllChildren(): ()`**: This method destroys all of an instance's children.
- **Method `Clone(): Instance`**: Create a copy of an instance and all its descendants, ignoring instances
- **Method `clone(): Instance`**:  *(deprecated)*
- **Method `Destroy(): ()`**: Sets the Instance.Parent property to `nil`, locks the
- **Method `destroy(): ()`**:  *(deprecated)*
- **Method `FindFirstAncestor(name: string): Instance?`**: Returns the first ancestor of the Instance whose
- **Method `FindFirstAncestorOfClass(className: string): Instance?`**: Returns the first ancestor of the Instance whose
- **Method `FindFirstAncestorWhichIsA(className: string): Instance?`**: Returns the first ancestor of the Instance for whom
- **Method `FindFirstChild(name: string, recursive?: boolean): Instance?`**: Returns the first child of the Instance found with the given name.
- **Method `findFirstChild(name: string, recursive?: boolean): Instance`**:  *(deprecated)*
- **Method `FindFirstChildOfClass(className: string): Instance?`**: Returns the first child of the Instance whose
- **Method `FindFirstChildWhichIsA(className: string, recursive?: boolean): Instance?`**: Returns the first child of the Instance for whom
- **Method `FindFirstDescendant(name: string): Instance?`**: Returns the first descendant found with the given Instance.Name.
- **Method `GetActor(): Actor?`**: Returns the Actor associated with the Instance, if any.
- **Method `GetAttribute(attribute: string): Variant`**: Returns the value which has been assigned to the given attribute name.
- **Method `GetAttributeChangedSignal(attribute: string): RBXScriptSignal`**: Returns an event that fires when the given attribute changes.
- **Method `GetAttributes(): Dictionary`**: Returns a dictionary of the instance's attributes.
- **Method `GetChildren(): Instances`**: Returns an array containing all of the instance's children.
- **Method `getChildren(): Instances`**:  *(deprecated)*
- **Method `GetDebugId(scopeLength?: int): string`**: Returns a coded string of the debug ID used internally by Roblox.
- **Method `GetDescendants(): Instances`**: Returns an array containing all of the descendants of the instance.
- **Method `GetFullName(): string`**: Returns a string describing the instance's ancestry.
- **Method `GetStyled(name: string, selector: string?): Variant`**: Returns the styled or explicitly modified value of the specified property,
- **Method `GetStyledPropertyChangedSignal(property: string): RBXScriptSignal`**: 
- **Method `GetTags(): Array`**: Gets an array of all tags applied to the instance.
- **Method `HasTag(tag: string): boolean`**: Check whether the instance has a given tag.
- **Method `IsAncestorOf(descendant: Instance): boolean`**: Returns true if an Instance is an ancestor of the given
- **Method `IsDescendantOf(ancestor: Instance): boolean`**: Returns `true` if an Instance is a descendant of the given
- **Method `isDescendantOf(ancestor: Instance): boolean`**:  *(deprecated)*
- **Method `IsPropertyModified(property: string): boolean`**: Returns `true` if the value stored in the specified property is not equal
- **Method `QueryDescendants(selector: string): Instances`**: 
- **Method `Remove(): ()`**: Sets the object's `Parent` to `nil`, and does the same for all its *(deprecated)*
- **Method `remove(): ()`**:  *(deprecated)*
- **Method `RemoveTag(tag: string): ()`**: Removes a tag from the instance.
- **Method `ResetPropertyToDefault(property: string): ()`**: Resets a property to its default value.
- **Method `SetAttribute(attribute: string, value: Variant): ()`**: Sets the attribute with the given name to the given value.
- **Method `WaitForChild(childName: string, timeOut: double): Instance`**: Returns the child of the Instance with the given name. If the
- **Event `AncestryChanged`**: Fires when the Instance.Parent property of this object or one of
- **Event `AttributeChanged`**: Fires whenever an attribute is changed on the Instance.
- **Event `ChildAdded`**: Fires after an object is parented to this Instance.
- **Event `childAdded`**:  *(deprecated)*
- **Event `ChildRemoved`**: Fires after a child is removed from this Instance.
- **Event `DescendantAdded`**: Fires after a descendant is added to the Instance.
- **Event `DescendantRemoving`**: Fires immediately before a descendant of the Instance is removed.
- **Event `Destroying`**: Fires immediately before (or is deferred until after) the instance is
- **Event `StyledPropertiesChanged`**: Fires whenever any style property is changed on the instance, including

### From [Object](/docs/reference/engine/classes/Object.md)

- **Property `ClassName`** (`string`): A read-only string representing the class this Object belongs to.
- **Property `className`** (`string`):  *(deprecated)*
- **Method `GetPropertyChangedSignal(property: string): RBXScriptSignal`**: Get an event that fires when a given property of the object changes.
- **Method `IsA(className: string): boolean`**: Returns true if an object's class matches or inherits from a given class.
- **Method `isA(className: string): boolean`**:  *(deprecated)*
- **Event `Changed`**: Fires immediately after a property of the object changes, with some