Help with Dynamic Block - Circular Reference

[Anonymous]

Hi there,

I'm trying to create a dynamic block for a WN flange but having some difficulty with circular references.

In the attached DWG when I try to add a stretch action to the flange thickness ("tf") I get the following error:

"The selection set contains a parameter or action that has introduced circular reference within the dynamic block."

Can someone please have a look at the attached and advise what I am doing wrong?

[Libbya]

Undoubtedly it is because you have almost all of your parameters chained.  Why?  You should only chain parameters that specifically need to be chained and I don't see why any of yours need to be.  

If you want more specifics, you would need to describe what you are trying to stretch.  If you are attempting to stretch a chained parameter that in turn is already stretching the parameter you are trying to add the stretch action to, then it creates an unresolvable circular reference - both parameters would stretch to infinity.