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Why doesn't VBA let me assign a variable to the class that it ends up being instead of to a generic object?

Question asked by Tim Lewis on Nov 13, 2015
Latest reply on Nov 13, 2015 by Tim Lewis

The code below works fine when swPart is defined as a generic object, and when I use the TypeName function to get the specific type of object, VBA tells me that it is a "PartDoc".  However, the code below produces the error shown in the screenshot when it is compiled.


Option Explicit

Sub Test()

Dim swApp As SldWorks.SldWorks, swPart As PartDoc


Set swApp = Application.SldWorks

Set swPart = swApp.ActivateDoc("Example.sldprt")


Debug.Print swPart.SetMaterialPropertyName("Custom Materials.sldmat", "Stainless Steel (ferritic)")

End Sub


The error:




Clicking "Okay" puts the editor in debug mode and highlights ".SetMaterialPropertyName".  So my question is, why can't I assign swPart to the class that it ends up being anyhow?