I had received some advice as follows:

"From your mainform, you can set a Filter on a Subform like this:

Me.NameOfYourSubformCONTROL.Form.Filter = " dwfTitleNo=1"
Me.NameOfYourSubformCONTROL.Form.FilterOn = True

Note the NameOfYourSubformCONTROL; this may or may not be the same as the form you're using as a SourceObject, so be careful with that.

This would be done in the AfterUpdate event of your combo."

However, when I used this code with my "NameOfYourSubformCONTROL" = cboSig and cboEvals for each corresponding subform, it did not recognize the code after Me.cboSig. Then I put in the name of the form: frmMasterTabForm just in case they meant .Form to be the Form Name, but no dice.....

any ideas???