Hi Vince, dont know if is this what you want but i ran just a test:

string test = "MISSION SUCCESSFULL";

digits(17,40,test,*,1,0);

function change_string()
{
str_cpy(test,"MISSION FAILED");
}

on_1 = change_string;

And it changes in run-time in the panel, now is MISSION FAILED.