[CE U12 VBA] Dimension Element Primary Text Property

I've migrated a VBA macro from V8i to CE Update 12 that places dimension elements. 

In the V8i version this statement works without a problem to place the automatic text for the dimension element

            elDim.PrimaryText = "*"

In CE U12 I get this error on the same statement.

If I replace the * with any other text value the statement works without a problem.

            elDim.PrimaryText = "Dim Value"

Is this a defect in CE, or is there a new way to enter specify automatic text in a dimension element?