[quote user="Taylor Brownlow"]I have reference files in a master file named 12345drng.dgn, 12345reqd.dgn and I need to have something that will go to each file's properties and change the logical name to DRNG and REQD[/quote]
Your rule is something like this pseudo-code?
If fileName Like "nnnabcd.dgn" Then logicalName = ExtractAlphaFromName (fileName) EndIf
Where function ExtractAlphaFromName() strips the file extension and trims the leading digits?