Correct usage of ap_response_message filter

Hi,

I’m looking into modifying the anspress response messages, and can see that there is a filter ap_response_message that can be used to do exactly this.

I’ve tried using this, but the filter I apply is causing the message to stop showing entirely. I can see the filter is correctly updating the array though, so I’d like to ask if there is something I’m missing?

Here is the code I”m currently using…

function new_response($msg) {
 $msg[no_permission][message] = 'No!';
}

add_filter('ap_responce_message', 'new_response', 1, 1);

Any help you can provide will be really appreciated!

Thanks

Matt