I need to create an expiration date and store it in a row in a collection using toUpdate. The next expiration date is today's date with one added to the year, the first of the month and the same month. I want it to be stored so that it is later retrievable using $w("#txtexpDate").text = items.expirationDate.toLocaleDateString("en-US", options); which works now. let expDate = new Date(); // Get new expiration date expDate.setDate(1); expDate.setFullYear(items.expirationDate.getFullYear() + 1); //one year later expDate.setMonth(items.expirationDate.getMonth); //same month next year $w("#txtexpDate").text = expDate.toLocaleDateString("en-US", options); // gives me invalid date let toUpdate = { "_id": itemsID, "membershipType": $w("#membershipType").value, "firstName":$w("#input1").value, "lastName":$w("#input2").value, "expirationDate": expDate.text }; // doesn't work Would really appreciate the help... Thank you.