Images name in Slideshow screenserver

Hi.

I want to edit the Addon "Slideshow", make him show the Img Name for every image in the screensaver.
I don't know python, or skinning, but I Tried to Edit some stuff.



I edited the file: screensaver.xbmc.slideshow\resources\skins\default\720p\script-python-slideshow.xml
I Added a control "label", works fine.
The Only problem now is what to put in it? How to make it works.

Also tried to mess with the python code, but without success. (the Top window in the image)
any help?