WowAce

I have a macro set up for use with stealth and crimson dance. 

#showtooltip
/cast [combat][stealth,nomod][mod,nostealth] Crimson Vial; Stealth

I have this on a bar with keyind r, then on a second bar with keybind Shift+R.

Is it not possible for the modifier in the keybinding to interact with the conditions of the macro? for some reason the spell icon changes correctly, but it will not cast the proper spell. It will only function with other modifiers like ctrl or alt