Select range of data

Hello. I trying to write a vbscript and I don't now why it doesn't work

I try to select data from C11 to E__ (last cell used in column E). I write a function:

Function GetPersonalData(objSheet)
With objSheet
last = .Cells(.Rows.Count, 5).End(xlUp).Row 'this doesn't work
Set GetPersonalData = .Range(.Cells(11,3), .Cells(last,5))
End With
End Function

When i write for example last = 23 everything work. I think that I make dump mistake :P
Can you help me? I write script in vbs filetype

How are you calling the function?

Handle breakpoint and see what in variable last
ps:w Polsce tak samo istnieje forum excel

GetPersonalData(objSheetSrc).Copy

because I want copy selected range in function GetPersonalData


kalbasiatka variable last is empty.