Excel formula into all cell array

Question

Im trying to fill in a formula in a lot of cells using a VBA. The workbook I'm working with looks like this:

I'm trying to fill in a formula starting in B3. I first tried to define a range and insert formula, but my problem is that the range is never the same. Some data sets I have more columns and others i have more rows.

Is there a way to make a VBA that defines the range as all columns with content in Row1 and all rows with content in A?

The formula that I'm trying to inset is like this: =INDEX(Sheet1!$N:$N;MATCH(Sheet3!$A:$A&Sheet3!B$1;Sheet1!$R:$R;0))

I hope someone can help me with my problem.

Answer 1

you could create a dynamic named range that can be used in VBA

Use the below to define the range

=OFFSET(Sheet1!$B$3,0,0,COUNTA(Sheet1!$A:$A)-1,COUNTA(Sheet1!$1:$1)-1)

Changing Sheet1 to that of your sheetname

Assuming that there areno blank columns or rowsin your data set etc.