[TYPO3-english] tt_content conditions

[Roberto Torresani]

Hi all!
I'm looking for create a condition in template about tt_content.

If I use
[globalVar=TSFE:page|uid=XXX]
with the uid of the page my condition is true

But if I use
[globalVar=TSFE:tt_content|uid=YYY]
with the uid of my content the condition don't works

My target is to create condition on header_layout: I try to use without
success
[globalVar=TSFE:tt_content|header_layout=ZZZ]

What is wrong?

Thanks
Roberto