I think the key words in the OP's Q are "Custom Document Properties".
Note that the suggested approach only works with "Extended File
Properties"!

This task requires the OLE File Property component named "dsofile.dll".
To work with Office12 and later will also require the Office 2007
Compatibility Pack.

I'm not sure, but I think you may also be able to do this via ADODB.

--
Garry

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