[aza77]

if ($zavious == 0)
{
$zavious = undef;
if ($text=~/Hail/i)
{
quest::say("Hello $name. I have been expecting you. Ambassador Dumont told
me you would be arriving shortly. Do you have the four books that the
Ambassador told you to retrieve from Crushbone? If so, hand them to me.
#summonitem 51510");
quest::setglobal("zavious",1,0,"M2");
$zavious = undef;
}
}

i don't know why u have $zavious == 0 in there ... the way u write it is a little bit confusing.