[wolfwalkereci]

Using a event say this works for me.

sub EVENT_SAY {
    if($text=~/hail/i) {
        if ($faction ==7) {
            quest::say("blah blah");
        }
    }
}

In your example I see you have the following:

if $faction ($client) >= 6)) ;

Missing a "(" in there. Not sure what else might be an issue.