Now, I wonder if justifun made the action on a Mac in the first place, and if he tested it recently on PC...
After testing it by playing builds (only way to get it working), I made a very handy little text input system. All the letters/numbers/symbols of course, got backspace erasing one letter back at a time. Saved as a string to use anywhere else. All thanks to this Action. It should really be included as standard.