display last open picture

display last open picture

I am using system variable " last open picture". When i use it in runtime it is not visible.I have one main project and a sub project and I have included it in both. But it is not visible in runtime.
Could I get any help on this?

This is a migrated post! Originally posted on 05.09.2008 by user dak2483. Please be aware that information can be outdated.