How do I add Local Variables like in the screenshot below? I am trying to recreate an Arcade style joystick.
<img src="http://imageshack.com/a/img199/3563/h6zq.png" border="0" />
Click on a sub-event, Add->Add local variable (V)
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Also, if you drag a global variable into a sub event, it becomes a local variable(works vice-versa too).