@botsrus Right. ( there are other types of selector's) like match & xpath. Believe it or not but that's easy, if u wanna manege this soft well, u have get get a crash course in selector's =)
Thank you! it worked, i was using [[VARIABLE]]/Images.txt with expression, it was also giving me error but then i used it with string then it worked. I thought in string, variables values cannot be used :)