import { LightningElement,api } from 'lwc'; export default class CustomUnitComp extends LightningElement { @api unitValue; @api unitOptions; @api recordId; connectedCallback(){ } handleDataChange(event){ console.log('unitValue = ' + event.target.value); this.unitValue = event.target.value; this.dispatchEvent(new CustomEvent('unitchange', { composed: true, bubbles: true, cancelable: true, detail: { data: { unitValue: this.unitValue, recordId: this.recordId } } })); } }