CTRL C and CTRL V are the Excel default shortcuts for Copy and Paste
(respectively). Since Excel ships with these as the shortcuts, my
first question is (and I'm not intending to be a jerk, here) do you
need to re-invent that wheel?

My next question is, also not intending to be a jerk, are you sure the
C and V are properly assigned to their respective macros? It sounds
Excel is confused, perhaps by conflicting or incompatible commands.