gmap's with multiple tile sets...?

[scriptless]

Okay so I have a gmap, and I set a default tile set for all levels. I set all levels with another prefix to use a different. But when I enter the second level, it changes tile set for both levels. Like the level I am in, and the other levels around it also show using that tile set. Is there any way to prevent this behavior?

PHP Code:

  removetiledefs("");

  // Set our overworld's tileset
  addtiledef("other_tiles.png", "", 0);
  addtiledef("pics1.png", "vol", 0); 


When I am in any level vol I see pics1.png and while standing in the level all levels that should be using the other tiles look like pics1.png until I enter those levels.