I cannot seem to make my arrayformula pupolate downards from the first referenced row for some reason

*background

I have 15 ish formulas in an active document that I would like the to autopopulate with the formulas when I create new rows.

The way to do this seems to be ArrayFormula and changing the references from say O2 to O2:O to make it populate the sheet

I am making some basic error here and I need some assistance ðŸ™‚

link to test sheet *some headers are in Swedish (sorry) ðŸ™‚

https://docs.google.com/spreadsheets/d/1P7M73-ITRG3LNA5O7yR0grj40d9tFF8Ve6ed6hQkiyc/edit?usp=sharing

my testing; *** this is in the example sheet in G1

*orig formula which works fine dragging into new rows

=IF(AND(O2=""),"",IFERROR(MAX(($V2)/$X2,0)))

```
*the formula checks for empty cells and if not it will calculate a percentage based on other furmulas
```

*array with original formula + header row

={"Klar"; ArrayFormula(IF(AND(O2=""),"",IFERROR(MAX((V2)/X2,0))))}

**this results in O2 populating as expected

With somehow incorrect references which I hoped would populate the whole collumn

={"Klar"; ArrayFormula(IF(AND(O2:O=""),"",IFERROR(MAX((V2:V)/X2:X,0))))}

I expect the formula to currently populate O2-> O6 and to go into new rows with data when they appear.

I also expect to be able to do arrays for all 15 collumns.

### >Solution :

Use `MAP()`

function. I have made this formula based on your provided formula * =IF(AND(O2=""),"",IFERROR(MAX(($V2)/$X2,0)))*.

```
=MAP(O2:O,V2:V,X2:X,LAMBDA(x,y,z,IF(x="","",MAX(y/z,0))))
```