small edition for "Urgent Call" and "I miss you" function

[Alexandria 53]

Hello there,

 

I have a custom map in my server called "pvp_vs_guild", you can't leave that map without any another way. (There is a npc which helps you to exit)

 

But when someone uses the skill called Urgent Call (guild skill) or I miss you (wedding skill) in prontera or another map, they can leave "pvp_vs_guild".

 

Do you guys know how can I edit my SRC folder to block those guys who try to leave in that way?

 

Thank you in advanced!

[Alexandria 53]

Any help?