Open report with option group

[Hoving]

Two questions:

1. I have a report, rptEveryone, based on a query, qryEveryone. One field in the query and on the report is called DoctorName. What would I enter in the Filter property of rptEveryone so the report includes only records where the DoctorName field on the report is not blank (i.e., Is Not Null)?

2. A variation of the first question. How do I filter a
report from an option group?

I have an option group, optSelectReport, on a main form, frmMain. The option group has 3 options. When the user
selects the 3rd option (labeled "Print Report for Doctors only&quot and hits a command button, cmdPreview, I'd like the report, rptEveryone, to open filtered for records where the DoctorName is not null. Right now the report opens unfiltered, because I don't know how to write what I assume should be a Where statement (like "Where DoctorName Is Not Null).

Here's what I have so far in the code of frmMain:

**************************************
Sub PrintReports(PrintMode As Integer)
On Error GoTo Err_Preview_Click
' This procedure used in Preview_Click and Print_Click
' Sub procedures.

Select Case Me!optSelectReport
Case 3
DoCmd.OpenReport "rptEveryone", PrintMode

End Select

Exit_Preview_Click:
Exit Sub
Err_Preview_Click:
Resume Exit_Preview_Click
End Sub
----------------------------------

Private Sub cmdPreview_Click()
PrintReports acPreview
End Sub
----------------------------------

Private Sub cmdPrint_Click()
PrintReports acNormal
End Sub
**************************************

Thank you for any help.

Hoving