Add new dropdowns and submit several Vales, only one value is submitted - html

Question

When the values ​​in the dropdowns are selected and submitted, all the values ​​will be submitted.
But when you go to Add New Items and add new dropdowns and submit several Vales, only one value is submitted.
$(document).ready(function(){
var multipleCancelButton = new Choices('#choices-multiples', {
removeItemButton: true,
maxItemCount:100,
searchResultLimit:100,
renderChoiceLimit:100
});
});
$(document).ready(function(){
var multipleCancelButton = new Choices('#choices-multiple', {
removeItemButton: true,
maxItemCount:100,
searchResultLimit:100,
renderChoiceLimit:100
});
});
$('#submit').click(function(){
var multiselect = $('#choices-multiples').val();
var multiselects = $('#choices-multiple').val();
document.getElementById("items-1").value = multiselect;
document.getElementById("items-2").value = multiselects;
});
$(function() {
var scntDiv = $('#items-lists');
var i = $('#items-lists p').size() + 1;
$('#add_items').live('click', function() {
$(`<p> <label for="item-list-1"><select name="items-cat-1-${i}" id="choices-multiples-${i}" placeholder="Select The Items 1" multiple><option value="Item-01">Item-01</option><option value="Item-02">Item-02</option></select></label> <br><label for="item-list-2"><select name="items-cat-2-${i}" id="choices-multiple-${i}" placeholder="Select The Items 2" multiple><option value="Item-01">Item-01</option><option value="Item-02">Item-02</option></select></label> <br><input type="text" name="items-cat-1-${i}" id="items-1-${i}"><input type="text" name="items-cat-2-${i}" id="items-2-${i}"> Remove Field</p>`).appendTo(scntDiv);
var multipleCancelButton = new Choices(`#choices-multiple-${i}`, {
removeItemButton: true,
maxItemCount:5,
searchResultLimit:5,
renderChoiceLimit:5
});
var multipleCancelButton = new Choices(`#choices-multiples-${i}`, {
removeItemButton: true,
maxItemCount:5,
searchResultLimit:5,
renderChoiceLimit:5
});
$('#submit').click(function(){
document.getElementById("items-1-${i}").value = $("#choices-multiples-${i}").val();
document.getElementById("items-2-${i}").value = $("#choices-multiple-${i}").val();
});
i++;
return false;
});
$('#rem_items-lists').live('click', function() {
if( i > 2 ) {
$(this).parents('p').remove();
i--;
}
return false;
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link href="https://getbootstrap.com/docs/5.0/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/bbbootstrap/libraries#main/choices.min.css">
<script src="http://code.jquery.com/jquery-1.7.2.js"></script>
<script src="https://code.jquery.com/jquery-1.4.3.min.js" integrity="sha256-+ACzmeXHpSVPxmu0BxF/44294FKHgOaMn3yH0pn4SGo=" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/gh/bbbootstrap/libraries#main/choices.min.js"></script>
<form method="post" id="datasend" autocomplete="off" onsubmit="return checkForm(this);" name="datasend">
<div id="items-lists">
<p>
<label for="item-list-1"><select name="items-cat-1" id="choices-multiples" placeholder="Select The Items 1" multiple><option value="Item-01">Item-01</option><option value="Item-02">Item-02</option></select></label> <br>
<label for="item-list-2"><select name="items-cat-2" id="choices-multiple" placeholder="Select The Items 2" multiple><option value="Item-01">Item-01</option><option value="Item-02">Item-02</option></select></label> <br>
<input type="text" name="items-cat-1" id="items-1">
<input type="text" name="items-cat-2" id="items-2">
</p>
</div>
<h6>Add New Items</h6>
<input id="submit" type="submit" name="submit" value="Submit" onclick="getMultipleSelectedValue()"/>
</form>
When the values ​​in the dropdowns are selected and submitted, all the values ​​will be submitted.
But when you go to Add New Items and add new dropdowns and submit several Vales, only one value is submitted.