setting rule on a constraint region?

Jerry, are you asking in general or specifically from Skill?  I don't know about skill for sure but in general, you should see 4 woorkbooks under the Spacing area (Spacing Constraint Set, Net, Net Class-Class and Region).  Under Region, you then can set the specific shape to pin spacing that you want on the appropriate tabs.

You should be able to do it though, after a quick search, it should be something along the lines of 

tbl = axlCnsClassTableCreate("VOLTAGE" nil "ANALOG" 'spacing "25MILS")

where VOLTAGE defines a Net Class-Class, ANALOG is your region and 25MILS is your Spacing Constraint Set.  

I think you have to define the spacing constraint set first,a and just assign that to the region, you can't directly edit the constraints within the region.

Specifically in skill. I've created a skill program that creates MFG coupon symbols which requires -1 spacing for pin to shape. I create are region, but currently the designers need to go into CM and update the shape to pin spacing to -1. I would like to do this programmatically.

There is not a CLASS, so I am not sure if axlCnsClassTableCreate() will work.

Thanks for your input and I will look at axlCnsClassTableCreate() some more.

--Jerry