PDM API is written so bad that all AIs are clueless. Good job dassault. No wonder solidworks is crashing so often. Also try to at least compile the code with summaries included.

Anyway how can I retrieve PDM variable name from attribute name and extension?

Can someone create function with signature:

Public Shared Function GetVariableByAttribute(vault As IEdmVault5, attributeName As String, fileExt As String) As String


Also include caching if all variables need to be retrieved.