# fsFlowRegister<no value>
The **fsFlowRegister** is used to register a Flow API callback;

 

##### Syntax

``` wasm
bool fsFlowRegister(
    fsFlowWasmCallback callback
    void* context
    );
```

 

##### Members

<table><thead><tr class="header"><th>Parameters</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>callback</code></td><td>Callback to use if the event is received.</td></tr><tr class="even"><td><code>context</code></td><td><p>Context given when the event is registered. The pointer will be sent back when the event is called</p><p>Default value is <code>nullptr</code>.</p></td></tr></tbody></table>

 

##### Return Values

The function returns `False` if something is wrong with the arguments and/or the registration did not happen, otherwise it returns `True`.

 

##### Remarks

N/A