NPC Scroll - How to edit time

[Jason1990]

Hey all, a bit time ago i tried to create a NPC scroll.

It worked to create, to spawn and to use.
BUT, the npc can not be despawned :D so after spawn the npc will stay forever.
So my question is:

Where i can change this time. So for example spawn and after 10Minutes = despawn, for example.

Thanks for help and sorry for my broken english^^

[MentaL]

[Jason1990]

push, anyone have a idea or hint?

[Caosfox]

check pandora box, mobs only last for some minutes

[Jason1990]

Ow good idea :) thanks, i'll do that.

So far anyone know it or has other hints, tell me also :)