How do I distinguish data types with similiar file extensions (and incorporate serial numbers)?

Hi there,

I feel my issue should already be a feature incorporated into EPDM 2012, but can't seem to wrap my head around the methodology involved.

I have a folder structure made up of 7+ projects. Within each project folder are sub-folders incorporating Work Orders and Contracts, for example, both are word documents and are numbered as follows:

Work Order - WOxxxx where xxxx is a serial number

Contracts - Conxxxx where xxxx is another serial number

The file attached shows the folder structure a little better. What I need to do is identify (somehow) different file types (with the same file extensions) and then apply a serial number to them (on a vault level). I know this is a pretty simple process if it was applied on a sub-folder level, however, I want the 1st Work Order (lets say from project 1) to be WO0001 and the 2nd Work Order (from project 3 for example) to be WO0002, etc. Similar deal goes for contracts and other document with similiar file extensions.

Thanks a lot, and help is appreciated.

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