To customize an IMM, you must set three number parameters. Set the number parameter "max_open" and give it the value of the greatest distance the IMM can be opened, also known as the max daylight. You must also set the number parameter "open_dim" and give it the value of 0 (zero), since it is the value used to open and close the IMM. When assembled with a mold base, this value will be changed programmatically. Finally, set the number parameter "fix_dim" and give it any arbitrary value k, since it will also be changedprogrammaticallyy.

You must also set two relations. The first relation is "top_dim=fix_dim". The second relation is "bottom_dim=open_dim".