Syntax and compile error.

I am getting a syntax and compile error on the dim cou .... line. Any suggestions?

Thanks,

Jim

Sub createfolders()
'
'
dim cou as integer,Dim FolderStr as string, FileSys
For cou = 1 To ActiveSheet.UsedRange.Rows.Count
FolderStr = Format(Trim(Str(cou)), "00#") + "_" + ActiveSheet.Cells(cou, 1)
Set FileSys = CreateObject("Scripting.FileSystemObject")
FileSys.createfolder C:\ + RESERVES
Next
End Sub