How can I listen for the CHANGE or BLUR event in the controller?
I've tried many suggestions from the forum, but could not make it work.
If I attach listeners right below the xtype: 'numberfield', it works but I need to be
able to reference it in the controller for further processing.
You can have a look at the source of eitable feature. I think you can try
listen to 'editstart','editend' or 'editcancel' event that fire inside this feature.