Assigning keyboard shortcuts? (FSUIPC)

I assign the keyboard shortcuts for certain switches and then asign the certain key combination to a joystick button, which allows me to control most of the switches with my joystick or throttle buttons. However I'm having a problem with the Dash 8. I managed to create some mouse macros for certain switches but does only work "in one way". For example: I can turn on the fuel pumps with mouse macro I created but I can't turn them off by pressing the same key (pressing the same key does nothing). Has anybody had any luck with assigning the buttons and switches? Surely it can be done somehow.