excel vba - How to freeze a range in VBA Custom function? -

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i want use udf function in excel freeze range when user drag formula. code here: 

public function division(rng1 range, rng2 range, rng3 range) division = application.worksheetfunction.sum(rng1) / application.worksheetfunction.sum(rng2) * rng3 end function

i want lock rng1 , rng2 in vba, not in excel sheet dollar sign. how can lock range.


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