traverse period hierarchy in reverse

Hi Team

in EPM CLOUD business rules, How to traverse period dimension in reverse order. i.e. first the rule should run for &curActMth (say APR), then followed by MAR, then FEB, then in the end JAN

as of now if I say (&CURACTMTH:Jan) - this only runs for CURACTMTH which is APR.

Thanks

sucharit