[Pawn] I need help with Assembly (#emit or __emit)

[Otakeiro]

I want to make a simple hook through the #emit

PHP Code:

native CallLocalFunction(const funcname[], const format[], {Float,_}:...);
native printf(const output[], {Float,_}:...);

stock __CallLocalFunction(const funcname[], const format[], {Float,_}:...) {
    static retval;
    if(funcidx(funcname) == -1) {
        retval = 0;
        printf("Function not defined: %s.\n", funcname);
    } else {
        if(numargs() == 2) {
            retval = CallLocalFunction(funcname, format);
        } else {
            // "emit" code to call function with args and return value to "retval"
        }
    }
    return retval;
} 


I've tried using codes like SendClientMessageEx or EasyDialog, but I need it to return the value
If possible comment the code so I can study it