Ok I tried that:

c_scan(camera.x,camera.pan,vector(360,50,180),IGNORE_PASSABLE|SCAN_ENTS);
while (you) // repeat until there are no more entities
{
if (you.skill15==1) {you.skill14=1; } //if the searched entity is in the scan cone set its skill
you = ent_next(you); // get next entity
}

But nothing happens. I want after c_scan if there is entitiy WITH skill15=1 in the scan cone sets its skill14 (and that must happens instantly)
HELP PLS !

Other way: Why you don`t make a event at the scanned entities? Your Player make a scan and all entities that would be scanned becomes the event EVENT_SCAN. And now you can check in the event from all entities, is the skill51 set or not.

Yes but the function with the scanning must happen in a certain moment (on_f=scan) And the entity's event is checking in each moment and when the camera gets close it will perform the function.

What I meant was to not use c_scan at all, but cycle through all entities using ent_next checking their distance from the camera, as well as their other flags/skills.

Jibb

I am not sure if i understand you right, my english is not so good.

You want to scan (on_f = scan) from the camerapos?
You can do that and when you scan, all entities in the scan area set their EVENT_SCAN (set ENABLE_SCAN for all entities). Now the function that you saved in the entity - action (my.event = scan_function) runs. In this Function you can check if the event is giving from a scan (if (event_type == EVENT_SCAN)) and also check the skills of every entity(if (my.skill51 == 1)) .