Change Revision Symbol Border?

SOLIDWORKS API
1

After inserting a Revision Symbol

value = instance.InsertRevisionSymbol(X, Y)

How can I change its border. I don’t see any method for that.

Thank You

2

I figured that that a Revision Symbol is really just a Balloon. I can insert the Revision Symbol using

swModel.InsertRevisionSymbol()

then change its format and border using

SetTextFormat()