[TYPO3] Condition in globalVar

[Livius Agrippa]

Hi,

I want to construct an if-else statement based on TSFE:id = 1 and GP:L=1
I have a site with 2 languages and it shows on every page the last 
update date. But right now, I want to show this information only on some 
pages (it is better to say that I don't want to show this date on 4-5 
pages).

Can someone provide an example?
Thank you in advance,
Livius