SheetSize attribute link returns the keyword "list" not the selected page format

Hi erveryone,

I'm trying to add the sheet size to our TitleBlock, but the attribute link (and template link) SheetSize always returns the word "list" instead of the selected page format. Is it not possible to query the attribute directly? Do I have to write a macro, to get the select page format? 

I think there was an attribute called SheetFormat in SolidWorks, but I could'nt find it in Catia. 

Any hints?