What is happening with this code.Can you point the community to the online resource about Threshold plugin? I have never heard of this in 7 yrs of working with AEM.

You can set all values a component needs within its own dialog and then use Sling Models and @Inject as discussed here -- Building Experience Manager Components using Granite/Coral Resource Types

I also tested on AEM 6.4 --

See the artilce i just posted. Go through it and make it work. I will update this too include a video so you can see it working.

Excellent response Arun!

See this article -- https://helpx.adobe.com/experience-manager/using/maven_arch12_event_listener.htmlCreating an AEM JCR Event Listener using a Maven Archetype 12 Project

I am glad its working.

After talking to internal ppl - they said:"This is a permission issue where process can't write binaries to the datastore locations. Check the owner and permissions for /crx-quickstart/repository/datastore and java /tmp location to see if something changed lately."

There can be many reasons why something on the AEM DEV instance broke or changed. I am going to talk to internal ppl about this.

Did you try to install this package on a fresh AEM instance as I suggested. If it works on a fresh instance - issue is your DEV AEM instance.