value 1 sets the zoom: in this version, the event takes the ABSOLUTE VALUE of defaultCamZoom.
to go back to the original zoom, input the original defaultCamZoom.

This event automatically switches to custom mode when value 2 is used. leave blank to use the regular mode.
value 2 is the zoom duration (in beats), and the tween used.

for a list of eases, go to:
https://api.haxeflixel.com/flixel/tweens/FlxEase.html