Forums Scripts & Popups help with a specific while loop

hi im tryin to do a loop where itll check all instances of

%thinga $+ %x are checked for $nick - else inc %x and redo it

then the same for %thingb

i was thinkin of doing something like this

var %z = 1
while (($(%thinga $+ %x),2) && $nick isin ( $(%thinga $+ %x),2)) { actions to do if found | inc %x }
else { inc %x}

but what i found was it wuz really gonna b an endless loop kinda thing