on(event) {
		initialItemsHTML = select.innerHTML;

		var li = document.createElement('ui5-option');

		li.textContent = "New";

		select.innerHTML = "";
		select.appendChild(li);
	});

	restoreItemsBtn.addEventListener("click", function(event) {
		select.innerHTML = initialItemsHTML;
	});

	btnSetValue.addEventListener("click", function(e) {
		mySelect7.value = "Item2";
	});
	btnSetInvalidValue.addEventListener("click", function(e) {
		mySelect7.value = "NAN";
	});

	btnCheckFormValidity.addEventListener('