Added new custom Page Size to a PPD

[hman]

Hi all,
i trying to add a new page size to my Samsung CLP-315.ppd file.

i added this lines in respective sections
*PageSize Bollettino: "289 842 1 statusdict begin setpage end"
*PageRegion Bollettino: "289 842 1 statusdict begin setpage end"
*ImageableArea Bollettino: "0 0 289 842"
*PaperDimension Bollettino: "289 842"

But when i try to print... nothing. I think that foomatic don't like PageSize.

Could you help me to add a right settings to my ppd file ?

Regards
Armando