Variable timer set with a slider input OH3 rule

I am sure this is been don but I could not find it and I thought it could come in handy
I was able to piece this together thanks to many posts from others here it is likely not the best way to do things but it worked for me I was able to get feed back in the log as I went I’m still pretty green at scripting rules

but the context here is my bedroom tv has a terrible menu system for enabling the sleep timer
but openhab of course can control it so I added a rule and a couple of items and I have a timer i can set with my phone or by voice with google

setup is one switch to toggle the timer and one dimmer
I set my length of time with the dimmer and then turn on the timer with switch
which triggers the following rule

var ScriptExecution = Java.type("org.openhab.core.model.script.actions.ScriptExecution");
var ZonedDateTime = Java.type("java.time.ZonedDateTime");
var logger          = Java.type('org.slf4j.LoggerFactory').getLogger('org.openhab.rule.' + ctx.ruleUID);
var timer_time = items["Timmerthings_Timedimmer"];"timer started");

if (this.timer != undefined) {
  this.timer = undefined;

function turnOff() {"bedroomtv should be off");
  events.sendCommand("Bedroomtv_Power", OFF);
  events.sendCommand("Timmerthings_Timedimmer", 0);
  events.sendCommand("Timmerthings_Bedroomtvtimerswitch", OFF);
  this.timer = undefined;

this.timer = ScriptExecution.createTimer(, turnOff);

this works quite well I would like to in the future be able to cancel the timer by turning the switch off
but I have not gotten that far yet

anyways thanks for all the help. hopefully this helps someone else I will happily answer questions to the best of my ability if needed

Have a look into the event variable and trigger your rule not only once your switch will turn on, but trigger your rule based on any change of your switch item.

Thanks I looked at that
while I was piecing my current script together
it doesn’t seem that hard to add the canceling feature
just haven’t tested or tried it

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