ExcelBanter - SUMIF in Visual Basic Function

The excel always complaint about circular references. how can i prevent that
?
If I use Application.WorksheetFunction.SumIf:
C1 = Application.WorksheetFunction.SumIf...

then I will get the alert of Circular reference. Why ? and How to get rid of
?

I need the value of SUMIF from C1 - C5, in order to compare with R1-R5

My code is as below:

Function CheckSession(S1 As String, S2 As String, S3 As String, S4 As
String, S5 As String, R1 As Integer, R2 As Integer, R3 As Integer, R4 As
Integer, R5 As Integer) As String

Dim Session As String
Dim C1 As Integer
Dim C2 As Integer
Dim C3 As Integer
Dim C4 As Integer
Dim C5 As Integer

C1 = Application.WorksheetFunction.SumIf(Range("AL5:AL3 807"), "1",
Range("AP5:AP3807"))
C2 = Application.WorksheetFunction.SumIf(Range("AL5:AL3 807"), "2",
Range("AP5:AP3807"))
C3 = Application.WorksheetFunction.SumIf(Range("AL5:AL3 807"), "3",
Range("AP5:AP3807"))
C4 = Application.WorksheetFunction.SumIf(Range("AL5:AL3 807"), "4",
Range("AP5:AP3807"))
C5 = Application.WorksheetFunction.SumIf(Range("AL5:AL3 807"), "5",
Range("AP5:AP3807"))

Session = ""

If ((S1 < "CLOSED") And (S1 < "N/A")) Then
If C1 < R1 Then
Session = S1
End If
End If
If ((S2 < "CLOSED") And (S2 < "N/A")) Then
If C2 < R2 Then
If Session = "" Then
Session = S2
Else
If Val(Session) Val(S2) Then
Session = S2
End If
End If
End If
End If

...
...

CheckSession = Session
End Function

"MH" wrote in message
...
Dim var as Integer
var = 0
Do
If MyCondition = True Then
var = var + 1
Loop

Debug.Print var

'MH

"magix" wrote in message
...
Can anyone translate the excel function SUMIF into Visual Basic Function
format ?