! will ask for negative results.
if ($3 !isop $2) { }
I added this one. Still he jumps over it and goes straight to the other lines.
<@gigilal1> !op #omg2k3k gigilal1
<@Admin__> Giving gigilal1 Op in #omg2k3k - Completed.
-------- Edit --------
Found out the problem, it was the tabs between the lines.