[Cristhian]

new Float:Health;

"F" Maiъsculo

tente assim:

pawn Код:

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
    new Float:Health;
    GetVehicleHealth(vehicleid, Health); // Warnig aqui.
    if(Health < 100) // Warnig aqui.
    {
        TogglePlayerControllable(playerid,0);
        return 0;
    }
    return 1;
}