What's the syntax for an AttributeFilter in FME?

I want to use AttributeFilter and I need to filter data by ATTRIBUTE1 with possible values of ATTRIBUTE2. What is the syntax for it?

I tried:

1. attribute2



2. &attribute2


3. $attribute2


4. '&attribute2'

etc. but wasn't successful.

Answer

Sounds like you need to add a feature merger for attributes only.

If you could expand on the question can give a better answer.

Note: Using FME 2012 here