well this is the problem when i edit a single player well 1 the vehicles go to other way
something not important for me 2 i stay in the pelican never get out of the pelican 3 the hud not appear please help me to fix it

For the vehicles, make it run a different animation or set the starting position to be different and modify the cutscene as necessary.
To get out, I think you'd use (vehicle_unload_magic) or something like that, don't quote me on it.

2. (vehicle_unload insertion_pelican_1 "rider" )
3. (show_hud 1)

how i can put that code on the pelican
explain me please i am already bad with this

open up teh scripty script (check in guerilla)
put those lines of scripty script in where they should go (figure out yourself, not that hard)

yes i did it but the scripts are locked or something like that