Modules & VBA :: Filtering Same Field Twice With 2 Combo Boxes?

I have a sub form that I enter date range in 2 text box's txtstartdate and txtenddate this is filtering field "date raised" and I have combo box call cboclient this is filtering field "client name" this code is behind a command button after hitting the command button it open's the report and it show's all records with in the date range and with client name enter in cboclient works great. problem is I have now added another cboclient2 to filter client name twice so now I enter a date range in txtstartdate and txtenddate put a client name in cboclient and a client name in cbocleint2 hit command button it open's the report but doesn't apply the date range to cboclient2 it just show's all records with that client name

Code:
Private Sub cmdPreview_Click()
'On Error GoTo Err_Handler 'Remove the single quote from start of this line once you have it
Dim strReport As String
Dim strDateField As String
Dim strWhere As String
Dim lngView As Long

[code]...