Some parameters to a dynamic sequence call don't get passed. Why?

Example: Main.seq:

Step 1: Create a .net object, store reference in FileGlobals.MyRef

Step 2: Sequence call to external file. "#NoValidation, "C:\\"+Locals.UUT.PartName+".seq",

I load the sequence prototype manually and pass FileGlobals.MyRef as a parameter. It is passed by reference. The types are also correct.

Inside the subsequence the received parameter is set to Nothing. Why? How may I achieve this?

If I use propogate to subsequence and if MyRef is a local variable it works correctly.