Even "expert" answers can be wrong.

We have many non-native-English speakers here, and by saying: "I'm not sure, but if by x you mean y, then maybe you should try z..." you might just have stumbled upon what the OP was trying to get at.

Don't fear being wrong. I religiously upvote nodes containing <strike> and words to the effect: "Nevermind, I completely misread the question..." because it took guts to admit that. Everyone occasionally suffers from methane on the brain (aka brain farts)!