Okay, that's progress. I might need more details on what you mean by "I have a list of spec limits, so if there is a way to generate that . . . ." I am not exactly the control chart expert.
I do have a concern, though: When your graph regenerates after the data refreshes, does the new spec limit affect the result? In my example, I am able to set the spec limit, but when the graph (Control Chart Builder) regenerates, it does not reflect the new spec limit. I'm going to discuss that with the control chart expert.
I'm curious what type of chart you are generating so I can see if it does a better job of reflecting the new spec limit.