$ibl($2,$1).by <- return who set a ban on a channel, but if i use $iel($2,$1).by <- it will return the host from the user that put the exemption there, how can i return the nick instead? tryed to change $? to diffrent values, but didnt help at all. Ideas please?

Presumably $iel().by is returning the address in the format nick!user@host, so you can just use $gettok to extract it.

$gettok($iel($1,$2).by,1,33)