RefFile Structure in GetCExpressionValue

Greetings,

I'm building on others' work in Connect to get the clip boundary for a reference file. I am using VBA to do this by calling a couple of MDL functions.

The end result is I have a pointer to a ref file structure.  I'm trying to use the GetCExpressionValue() function to retrieve values in the ref file structure.

in V8i it was apparently acceptable to use:
lngScale = GetCExpressionValue((struct referenceFile *)2250204734080)->display.scale)

However, in Connect it's throwing an error, "structure/union names expected".  I assume this means it can't find the referenceFile structure at that pointer address or the method for passing the address has changed in the GetCExpressionValue function. 

Any ideas?

Thank you.