page parameters in TV with @EVAL

Hello! My situation is very strange.
I use a TV with "DropDown List Menu" type. In the "Input Option Values" I write a simple @EVAL, which do some requests to my database.
I need a method to get an id of a page when I edit this page in a manager to use this id in my @EVAL.
Simple methods like $modx->documentIdentifier or $modx->documentObject[id] are not give me page id.
Can anyone help me?

I’ve done something similar previously and used :
to get the page id.

Thank you! This just works. ;-)