Cycle through dynamics using up/down arrow when selected

It would be nice to be able to cycle through the dynamics (ppp, pp, p, mp, mf, f, ff, fff) with the up/down arrow keys if one of them is selected. This suggestion should be seen as a companion to a previous suggestion of a way to enter dynamics through the keyboard. With this addition, one wouldn't need 8 different shortcuts; one might enter f or p, and then cycle through the other ones until the desired one is found.