// For full API documentation, including code examples, visit http://wix.to/94BuAAs import {session} from 'wix-storage'; import wixData from 'wix-data'; var kw1,kw2,nm1,nm2; $w.onReady(function () { //TODO: write your page related code here... let res = session.getItem('id'); //Where result will be a string console.log(res); $w("#car").setFilter( wixData.filter() .eq("typ",res)) $w("#car").getItems(0, 1) .then( (result) => { let items = result.items; kw1 =(items[0].chip3_kW-items[0].kW)/(items[0].kW/100); nm1 =(items[0].chip3_nm-items[0].nm)/(items[0].nm/100); console.log(kw1); console.log(nm1); let totalCount = result.totalCount; let offset = result.offset; } ) .catch( (err) => { let errMsg = err.message; let errCode = err.code; } ); //Add your code for this event here: }); export function button1_click(event) { $w("#html1").postMessage("kw1"); $w("#html2").postMessage("nm1"); } kw1 and nm1 return undefined outside of the getItems function. I need to use these values in my html component.