This is what I have working

Private Sub Command123_Click()


DoCmd.OpenForm "ServiceCallsProposals", acNormal, "", "[CustomerID]=" & [CustomerID], , acNormal
If Me.OptionOne = True Then
Forms![serviceCallsProposals]![Proposal] = ProposalDescription
ElseIf Me.OptionTwo = True Then
Forms![serviceCallsProposals]![Proposal] = ProposalDescriptionTwo
End If
End Sub