Dim lights with Zigbee remote control - zigbee2mqtt

Thanks for the advice! This helped me to create a working rule!

var Timer timer = null

rule "Dimmer"
when
    Item Robb1_Action_Trigger received command
then
    if (timer!==null) {
        timer.cancel
    }
	if(receivedCommand == INCREASE) {
           timer = createTimer(now.plusMillis(100)) [|
	   Voorkamer_Dimmer.sendCommand(INCREASE)
                timer.reschedule(now.plusMillis(100))
        ]
    }
	if(receivedCommand == DECREASE) {
           timer = createTimer(now.plusMillis(100)) [|
	   Voorkamer_Dimmer.sendCommand(DECREASE)
                timer.reschedule(now.plusMillis(100))
        ]
    }
end