Ok, I gotcha now. Sounds like something's getting caught up in the cache. >From my experiences with modules (not service programs, maybe someone else could provide the answer for them), in modules, I had to control the opening and closings of a file (USROPN keyword on FSPECS). If you have the USROPN keyword on the display file, make sure that the display file is being closed when you leave the service program. If you try to compile a module without explicitly controlling the files, the module will compile, however, you will compile with severity of 10 (well, that also depends on your compile level). You will receive the following message in the compile listing... *RNF7534 10 1 Files should be closed explicitly when NOMAIN is specified the Control specification. If you go the route of controlling the opening and closing of the display file... At service program begin... If not %Open(DISPLAYFILE); Open DISPLAYFILE; EndIf; When Leaving... If %Open(DISPLAYFILE); CLOSE DISPLAYFILE; EndIf; Michael Schutte "Lim Hock-Chai" <Lim.Hock-Chai@us amobility.com> To Sent by: "RPG programming on the AS400 / rpg400-l-bounces+ iSeries" <rpg400-l@xxxxxxxxxxxx> michael_schutte=b cc obevans.com@midra nge.com Subject RE: Assume keyword on display file the is used by service program 05/09/2006 09:37 AM Please respond to RPG programming on the AS400 / iSeries <rpg400-l@midrang e.com> You got it the first time. >From our main menu option, I took an option to execute PROGRAMA and press a key to pop the window that is in the service program. The ASSUME and OVERLAY work correctly, with the PROGRAMA as the background. After exit PRORGAMA, I took another option to execute PROGRAMB and press a key to pop the same window, the window pop up with PROGRAMA background. Somehow the pop up window is using the background of the previous overlay. Strange. -----Original Message----- From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Michael_Schutte@xxxxxxxxxxxx Sent: Tuesday, May 09, 2006 7:26 AM To: RPG programming on the AS400 / iSeries Subject: Re: Assume keyword on display file the is used by service program I'm having trouble understanding what you're saying. You say initially the window properly overlay the background from PROGRAMA. But then you say if you leave PROGRAMA and go to PROGRAMB, did you mean the opposite? From B to A? Oh heck, I lost myself. -- This is the RPG programming on the AS400 / iSeries (RPG400-L) mailing list To post a message email: RPG400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/rpg400-l or email: RPG400-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/rpg400-l.