Hi,
With Classic UI We can use this.controller.FieldMap to get the field value and trigger events on the fields but the same is not available with new UI(Xi). I'm unable to find any solution by debugging the code component in the browser debug tool.
this.controller.FieldMap.WBORNO[0].onblur
let DIVI = this.controller.FieldMap["DIVI"].val().
This works perfectly with classic UI the Field Map object is undefined in new UI.