Try

$wksta=@wksta
$a=function($wksta,5,2)
$what_rm=val($a)

if $what_rm > 30
addprinterconnection(\\sever\printer_rm2)
else
addprinterconnection(\\sever\printer_rm1)
endif

I have removed the comments for you.

Good luck.
Rgds
Don