Is it possible to create a subtab and a sublist in custom record using userevent, beforeload. The below code is creating a sublist but not in any subtab, it coming in the main body.

const projectCartTab = form.addSubtab({
	id: "custpage_cart",
	label: "Cart",
});
const projectCartSublist = form.addSublist({
	id: "custpage_cart_detail",
	label: "Cart Details",
	tab: "custpage_cart",
	type: serverWidget.SublistType.LIST,
});

Thank you, idk what I was thinking. 😅