[Dignity]

pawn Код:

// top of script

new flying[MAX_PLAYERS];

// rest..

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if (newkeys == KEY_LOOK_BEHIND || newkeys == KEY_SUBMISSION)
    {
        if(flying[playerid] == 0)
        {
            StartFly(playerid);
            flying[playerid] = 1;
        }
        
        else if(flying[playerid] == 1)
        {
            StopFly(playerid);
            flying[playerid] = 0;
        }
    }
}

EDIT: I'm not sure but I don't think the "==" operator works in this case.

pawn Код:

if (newkeys == KEY_LOOK_BEHIND || newkeys == KEY_SUBMISSION)

to

pawn Код:

if (newkeys & KEY_LOOK_BEHIND || newkeys & KEY_SUBMISSION)