Create range in udf

Hello
Is it possible for a UDF to dimension a named range to work with inside a UDF,
I need to create a named range so I can pass it into the sumifs function
withing the UDF. I have all the other args for the sumifs but arg1 is dynamic
and this is the bit i'm stuck on.

This is what I have so far.
....
Dim SearchColumn As Range
....
SearchColumn = ???? (To be Sheets(1).Range(cells(1,x%),cells(y%,x%))
....
result = WorksheetFunction.SumIfs(SearchColumn, Column1Range,
Column1Criteria, Column2Range, Column2Criteria)
....
ICTSumIf = result


Any ideas
Thanks





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