I have a routine for which variables "t" & "s" have a value.

I would like Visual Basic to be able to enter a formula into the
active cell so that it equals whatever value may be contained in cells
(t,s) of the worksheet.

I tried:

Activecell.FoumulaR1C1 = "=R[t]C[s]"

but it is not working.

Any ideas would be much appreciated.