Hi Glenn.

>Does anyone know how to incorporate PHDbase index into a SDT system?

Validate your table as you normally would, then manually fill in CoreMeta.mTagExpr with the PHD expression to recreate the index. The reason CoreMgr doesn't fill that in is because the PHD expression to create the index and the value returned by KEY() are different, so SDT can't rely on that information to correctly recreate the index. Once you've filled that in, however, SDT's Reindex method will correctly recreate the PHDbase index.

Doug