variables:
	{perla.%player%}=0
    
on rightclick:
	if player's tool is ender pearl:
    	set {perla.%player%} to 1
        
on stand on block:
	{perla.%player%} is 0
    	stop
    {perla.%player%} is 1
    	set {perla.%player%} to 0
        stop
on damage:
	{perla.%player%} is 1:
    	cancel event
    {perla.%player%} is 0:
    	stop