Put data into different cell

Hi, is there a way for cell results to be put into a different cell?

E.g. =IF(A2>A1,S1,S2) where A2>A1 is true S1 contents will be displayed with S2 contents displayed if not true, but I want to e.g.
=IF(A2>A1,5=S1,S2) I want to put i.e. 5 into cell S1.

Any ideas?
Thanks.

If you want the result of S1=5 if A2>A1

In S1

=IF(A2>A1,5 , ????) ????

What is currently in S1 ?

Cell S1 is empty, I want to put a cell value into cell S1.

Put formula in S1

=IF(A2>A1,5 , "")

I want to use S1 as a variable that I can change from inside cell formula. So I can't put =IF into S1.

You will need VBA if you cannot have a formula in S1.