function cmdTank1(ilosc)

    if getPlayersInTeam(teams.shell.team) then

        if ilosc then

            ilosc = tonumber(ilosc)

            if ilosc then

                if ilosc >= 0 then

                    local veh = getPedOccupiedVehicle( source )

                    if veh then

                        local fuel = getElementData( veh, "fuel" )

                        setElementData( veh, "fuel", fuel+ilosc )

                        outputChatBox("* Zatankowa?es " .. ilosc .." paliwa", source, 0, 255, 0, true)

                    end

                end

            end

        end

    end

end

addCommandHandler("tankuj", cmdTank1)