Change recorsource for child form based on Criteia selected in Parent form VBA ACCESS 2010

I am trying to get a child form to changes its record source based on criteria the user selects from the parent form.  the below does create the record select string correctly, but I cannot get it to recognize the child form.  I have commented out the requery as it errors our when  it hits the recordsource setting.

Private Sub FilterForm(strFilter As String)
On Error GoTo ErrorHandler
Dim strSelect As String
Dim dteStartDate As Date
Dim dteEndDate As Date
Dim strAccountID As String
Dim strWhere As String
Dim intLength As Integer

strSelect = "SELECT * FROM tblAccountTransactions"

If Not IsNull(Me.txtStartDate) And Not IsNull(Me.txtEndDate) Then
    strWhere = "(tblAccountTransactions.TransactionDate Bewteen #" & Me.txtStartDate & "# AND #" & Me.txtEndDate & "#) AND "
ElseIf Not IsNull(Me.txtStartDate) And IsNull(Me.txtEndDate) Then
    strWhere = strWhere & " tblAccountTransactions.TransactionDate >=  #" & Me.txtStartDate & "# AND "
End If

If Not IsNull(Me.cboAccount) Then
     strWhere = strWhere & " tblAccountTransactions.AccountId = '" & Me.cboAccount.Column(0) & "' AND "
End If

intLength = Len(strWhere) - 5
strWhere = Left(strWhere, intLength)

If strFilter = "Filter" Then
    Forms!frmTransactions!sfrmaccountTransactions.Form.RecordSource = strSelect & " WHERE " & strWhere
'    Me.sfrmaccountTransactions.Forms.Requery
ElseIf strFilter = "Clear Filter" Then
    Forms!frmTransactions!sfrmaccountTransactions.Form.RecordSource = strSelect
'    Me!sfrmaccountTransactions.Form.Requery
End If

Exit_ErrorHandler:
    Exit Sub
ErrorHandler:
    MsgBox "Error Number: " & Err.Number & " Description: " & Err.Description
    Resume Exit_ErrorHandler
End Sub