Simple tutorial ECMAScript doesn't work (java.lang.NullPointerException)

[rossko57]

@Sergey_Afanasiev

I have installed under automation add-ons JSScripting 3.1.0

That’s it.
Might help-

All my ECMAScript scripts stopped working throwing exceptions

Which ECMAScript engine? There is the default ECMAScript 5.1 which comes with openHAB and there is the GraalVM JavaScript add-on you can install separately. The two are not the same and rules written in one are not compatible with the other. When you do install the GraalVM add-on, for some reason it breaks the built in JavaScript right now (I’ve opened an issue but it’s not gained traction yet) so if you do install the add-on, you must only use that for your rules. It’s clear from the error tha…

If you want to use the add-on you probably need to follow this -

Usage of new ECMA2021 Automation Scripting (GraalVM)

As the lastest OH3.1 snapshot officially supports ECMA2021 Java Scripting I am wondering how to use the new functionality. Until now I do use the syntax of the OH scripters to watch an item and fire the rule: function rule_test(event) { // Operations when rule is fired } when("Item HO_Date changed")(rule_test); rule( "Rule Test", "No desc" )(rule_test); Can i simply use this scripting with the new ECMA2021 Automation Add on? Because I tried to and got the following error in th…