Hello me again laugh

i have a "small" question about function pointers. If i am right function paramters can also be pointers to another function.

If i write two functions like this:
Code:
function test()
{
   beep();
}

function calling_func(function* f)
{
   ... // not sure what to write here cause f; or f(); wont work
}

What do i have to insert in "calling_func", so that this syntax
Code:
calling_func(test);

would let me hear the "beep()" sound.
Currently i only get "Call function @t_04018 error" <- no ideo what this means.

I'm gratefull for any help.
regards