Thank you for the response. I know we can add a ctype=D; however, the issue is when I try to add the boundaries within the b constraint variables. Since ctype=d is an upper and lower boundary, I am trying to enter both values for the constraint but the pro ramming only accepts a single value. I hope that makes sense. I will provide an example as soon as I get to my computer. Thanks for all your help.
Sent from my iPhone
On Aug 15, 2014, at 6:51 AM, Kai Torben Ohlhus <address@hidden