Referencing a variable in an array range

Hi,

I'm successfully using the following array formula to check a cells value against a list (contained in I3:K3843):

{=INDEX($K$3:$K$3843,SUMPRODUCT(LARGE(--(ISNUMBER(FIND($J$3:$J$3843,B3)))*$I$3:$I$3843,1)))}

However everytime I add another value to my list, I need to manually update this formula (from 3843 to 3844 for example). I'm looking to automate this...

In cell L2 I already have a count which outputs 3843. Does anyone know how I can reference this in my formula, aka

$K$3:$K$"value in cell L2"

Any help would be greatly appreciated!!!

Thanks guys

ChainsawDR

Thanks for the reply zbor. No unfortunately it requires it to be the exact range otherwise it produces #VALUE!

I've created a string that I've now started copying and pasting each time, but was hoping there might be a way of referencing that value in the count cell.