I create odoo module to print quantity from point of sale, and my module work fine with  developer mode (with assets), but does not when I deactivate the developer mode (with assets)

my script file inside path /pos_quantity/static/src/js/script.js

    odoo.define('pos_quantity', function (require) {
    "use strict";
    
    var core = require('web.core');
    var PosScreens = require('point_of_sale.screens');
    
    var _t = core._t;
    
    PosScreens.OrderWidget.include({
        set_value: function(val) {
            var order = this.pos.get_order();
            if (order.get_selected_orderline()) {
                var mode = this.numpad_state.get('mode');
                if( mode === 'quantity'){
                    order.get_selected_orderline().set_quantity(val);
                    console.log('Hello');
                    console.log('quantity');
                }
                if (this.pos.config.iface_customer_facing_display) {
                    this.pos.send_current_order_to_customer_facing_display();
                }
            }
        }
    });
    
    });

my template file

    <?xml version="1.0" encoding="utf-8"?>
    <odoo>
        <template id="assets_backend" name="POS UI Backend Assets Inherit" inherit_id="web.assets_backend">
            <xpath expr="//script[last()]" position="after">
                <script type="text/javascript" src="/pos_quantity/static/src/js/script.js">
                </script>
             </xpath>
        </template>
    </odoo>