shortcuts for righthand fingerings

[Branko]

when I use,

#(define RH rightHandFinger)

and then later,

\RH #3, for example.. it works..

but I want to further enhance this so I tried:
#(define RHm rightHandFinger #3)

and then,

\RHm, but that does not work..

What should I do to make that shortcut work? Thanks.