# Civetweb API Reference ### `mg_set_user_connection_data( conn, data ); ### Parameters | Parameter | Type | Description | | :--- | :--- | :--- | |**`conn`**|`struct mg_connection *`|| |**`data`**|`void *`|| ### Return Value *none* ### Description ### See Also * [`mg_get_user_connection_data();`](mg_user_connection_data.md)