Javascript Qualtrics code to pass previous response to a textbox

Qualtrics JS.js

Qualtrics.SurveyEngine.addOnload(function()
{

/* Removes 0s from Text Boxes */
var inputs = $(this.questionContainer).select('input');
inputs.each(function(el) {if (el.value == 0) el.value='';});

/* Creating variable to pass previous response to text fields */
var selectedChoice = "${q://QID5/ChoiceNumericEntryValue/1}";
var selectedChoice = parseInt(selectedChoice);

/* Creating variable to pass along embedded data */
var amount = "${e://Field/payment}";
var amount = parseInt(amount);

/* Passing along previous response to a particular textbox depending on embedded data assignment */
	if 	(amount == 1) {
		this.setChoiceValue(1, 1, selectedChoice); }
	else if (amount == 2) {
		this.setChoiceValue(2, 1, selectedChoice); }
	else if (amount == 3) {
		this.setChoiceValue(3, 1, selectedChoice); }
	else if (amount == 4) {
		this.setChoiceValue(4, 1, selectedChoice); }
	else if (amount == 5) {
		this.setChoiceValue(5, 1, selectedChoice); }
});