The gatekeeper now is using the teleports from the npc file. You can check the ID and find it in the NPC Folder. If you want to add a buttons you need to make new page and to make buttons like this
Code:
<button value="Level Up 50-60 " action="bypass -h scripts_Util:Gatekeeper 172104 20248 -3328 0" width=120 height=24 back="1.1" fore="1.1">
172104 20248 -3328 > is the location to the zone, you can get it by typing /loc or //loc