# fsCommBusUnregister<no value>
The **fsCommBusUnregister** is used to unregister one or more events that have previously been registered in WASM.

 

##### Syntax

``` wasm
int fsCommBusUnregister(
    const char* eventName,
    fsCommBusWasmCallback callback
    );
```

 

##### Members

<table><thead><tr class="header"><th>Parameters</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>eventName</code></td><td>The name of the event that you want to unregister.</td></tr><tr class="even"><td><code>callback</code></td><td><p>The callback associated with the event to unregister. This can be <code>nullptr</code> if you do not wish to specify a callback.</p><p>The default value is <code>nullptr</code>.</p></td></tr></tbody></table>

 

##### Return Values

The function returns the number of the event that has been unregistered.

 

##### Remarks

N/A