John Howlett 53 Report post Posted January 11, 2008 Originally from a Technical Support User: The PTM Open/Closed Trap flag does not seem to be working. I would expect the particles to not leave the trap when the Open/Closed Trap flag is set to "Closed". Share this post Link to post Share on other sites
John Howlett 53 Report post Posted January 11, 2008 Verify that the "Last time step trap" option is not being used. You can look for the keyword in the PTM Model Control, on the "Time" tab, or inside the Program Control File (PCF) http://www.xmswiki.com/index.php?title=SMS...am_Control_File for the keyword ":LAST_STEP_TRAP". If last step trap is used, the traps will not become active until the last time step. Share this post Link to post Share on other sites