GRE Tunnel Key on EX4300

Hi all,

I want to move service from a Cisco switch to EX4300 switch, but I can't find the key option for configuring gre tunnel on EX4300. Is that option does not exist on EX4300, or is it hidden somewhere?

My config on Cisco switch:

interface Tunnel1
description *******
ip address 172.27.252.30 255.255.255.252
tunnel source 172.27.253.30
tunnel destination 172.27.253.29
tunnel key 11007

Thank you.