Data type mismatch

Hello,everytime I try to update or inser into my Access Database I get a Type mismatch error.I tried several different ways to do this but still no luck.Can somebody please help?   Code:1 Dim Mnum As Integer = Me.Request.Params("Mnum")
2 Dim Datum As Date = Me.Request.Params("ID")
3 Dim Bool As Boolean = False
4
5 If Value = "X" Then
6 Bool = < ...