how to create shortcuts

[ars-vita]

i have a proble and i need create a short cut to the command "previous" in the live mode, i hear about there's a way to make it with the C++. but i still unknow how to do it, so... if someone knows another way to do it please help me

[Richard CSL]

in the shortcut menu there is only next and pause available so it is not possible to assign a shortcut to previous, this is because scene priority does not work in reverse.