[Congdar]

using your original code, try this:

sub EVENT_SAY {
    if ($text=~/hail/i) {
        quest::say("Hail to you, lesser being!");
    }
    elsif ($text=~/Set/i) {
        quest::say("Setting your stupid var human !");
        quest::delglobal("AVAR");
        quest::setglobal("AVAR", 1, 7, "Y50");
    }
    elsif ($text=~/Get/i) {
        quest::say("Here is your results $AVAR");
    }
}