Openhab rule for timers

var Timer timer
rule "Taend vindmølle"
        when
                //Time cron "0 0/1 * * * ?"   // every minute
                Item Voltage received update
                //Item VoltageTime changed
        then
        logInfo("voltage.rules", "Timestate: " + VoltageTime.state)
        logInfo("voltage.rules", "on off mode: ", WindRelayControl.state)
                logInfo("voltage.rules", "Voltage changed" )
        if (WindRelayControl.state.toString == "2"){
                        if (Voltage.state <= 56.5){
                        sendCommand(WindRelay, ON)
                        if(timer!=null) {
                        timer.cancel
                        timer = null
                        }
                        timer = createTimer(now.plusSeconds(70)) [|
                                //{
                                {sendCommand(WindRelay, OFF)}
                                //logInfo("voltage.rules", "Relay turned off due to timeout")
                                //}
                        ]
                        }else{
                        sendCommand(WindRelay, OFF)
                        }
                }else if (WindRelayControl.state.toString == "1") {
                sendCommand(WindRelay, ON)
                }else if (WindRelayControl.state.toString == "0") {
                sendCommand(WindRelay, OFF)
                }
end