Creating folderpaths based on variables

I'm looking to create folders on the fly with the folderpaths being based on defined variables.

Could someone please have a look at my code below and tell me where Im going wrong?

MainPath = "Z:\Mike\Retail Sept 2011\Macro\Tony Work\"

'***Copy Data From DumpFile***
    Windows("Sample Data Dump.xls").Activate
        Selection.AutoFilter Field:=1, Criteria1:=ParentNSC
        Range("A2").Select
        Range(Selection, Selection.End(xlDown)).Select
        Range(Selection, Selection.End(xlToRight)).Select
        Selection.Copy
        
'***Paste Date Into Template***
    Workbooks.Open Filename:=MainPath & "COINS Template.xls"
        Range("A2").Select
        Selection.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone, SkipBlanks _
            :=False, Transpose:=False
            
'***Define Region & Branch***
    Region = Range("B2")
    Branch = Range("C2")
            
    MkDir MainPath & "Outputs\" & "Region" & "\" & "Banch"