First, you'll notice that the labels for Set Control State action dialog are wrong, they don't make sense, nor does the way it is displayed in the event sheet editor
also, you'll notice that the Player number for Set Control state is zero based
you can confirm that you are indeed setting player1's "Move Left" control by holding the mouse button, as it works in the Set Text to 'MouseKeyboard.ControlState("Move Left", 1)'
if you press the built in Move Left control (left arrow) it has the same effect on the text object
however, pressing the left mouse button does not actually cause the sprite to move left. it doesn't work on behaviors? has anyone gotten this to work?