Our company uses a Solidworks Block to insert detail number Labels in drawings. When I insert the block it gets the detail number property from the part model as shown below.
DET:$PRPVIEW:"DetailNo"

Our company also uses coded file names, that's another issue in itself for another time perhaps!
back to the point!! Here is an example of a sample part file name
391-1_B_MF_02_DT_104.SLDPRT

notice the detail number is already part of the filename DT_104
My question is, Is it possible to use a string function in the block properties text to extract just the detail number portion from the filename property, rather than using a dedicated DetailNo property? We want to eliminate the DetailNo property if this works

Any help is appreciated

SW 2012 64bit

Tom Malinski