>I thought I had the correct syntax to detect if a parameter has been passed.
>
>I have the following method which accept a parameter and I would like to know if the parameter was passed.
>
>Sub Cleanup(Optional tnError As Integer)
>
>' If we pass a parameter
>If VarType(tnError) = 2 Then
> lnLastError = tnError
>End If
>
>But, this is not working because even if the tnError is not passed, the type is still integer.

Couple things:

1) Use the IsMissing() function in VB.
2) Using IsMissing requries that your parameter be a variant.