Problem mission

[Taso]

Hi guys !

I have a wierd problem. I've done the beginning of a map in United Saharani.
The mission begins with the player in a chopper and he has to do a chute jump.

In the editor everything goes well. But when I export my mission in MP missions and I try to play it, we start the mission in the left bottom corner of the map in the chopper which is flying...
It's the first time it happened to me. I tried the same mission with all the same scripts on Tchernarus and the result is the same... I appear in the left bottom corner of the map.

I've not managed to find what I'm going wrong...
Help please !

Thanks in advance.

EDIT : My bad... I made a mistake... It was not the right code to set the altitude of the chopper...