Unable to rerun script when selecting reference item

[user_ms]

When a record is selected from a reference field, a script is executed to copy each record's value.
If you select the reference item again, the script does not run.
Do you know why?
Do I need some other script to run the script again?
Again, if you know how the script is executed when I select the reference item, please let me know.

[Dhananjay Pawar]

Hi,

I believe you are handling this using onChange client script and Script inlcude. 

Please share your code here.

Thanks,

Dhananjay.

[user_ms]

//script include

var test1 = Class.create();
test1.prototype = Object.extendsObject(global.AbstractAjaxProcessor, {

    copy: function() {
        var set = this.getParameter('sysparm_set');

        var tb1 = new GlideRecord("tb_1");
        if (!tb1.get(tb1)) {
            return '';
        }

		var tb2 = new GlideRecord("tb_2");
        tb2.get('data2', tb1.test2);

		var tb3 = new GlideRecord("tb_3");
		tb3.get('data3', tb1.test3);

        var data = {
			'item_1': tb1.value_1.toString(),
			'item_2': tb1.value_2.toString(),
			'item_3': tb1.value_3.toString(),
			'item_4': tb1.value_4.toString(),
			'item_5': tb1.value_5.toString(),
			'item_6': tb1.value_6.toString(),
			'item_7': tb1.value_7.toString(),
			'item_8': tb1.value_8.toString(), 
			'item_10': tb2.sys_id.toString(),
			'item_11': tb3.sys_id.toString(),
        };
        return JSON.stringify(data);
    },

});

[user_ms]

//clientscript

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
   if (isLoading || newValue === '') {
      return;
   }

    var ga = new GlideAjax('x_test.test1');
    ga.addParam('sysparm_name', 'copy');
    ga.addParam('sysparm_set', newValue);
    ga.getXMLAnswer(function(response) {
        var data = JSON.parse(response);
        if (data) {
			g_form.setValue('item_1', data.item_1);
			g_form.setValue('item_2', data.item_2);
			g_form.setValue('item_3', data.item_3);
			g_form.setValue('item_4', Number(data.item_4.slice(0,2)));
			g_form.setValue('item_5', data.item_5);
			g_form.setValue('item_6', data.item_6);
			g_form.setValue('item_7', data.item_7);
			g_form.setValue('item_8', data.item_8);
			g_form.setValue('item_9', 0);
			g_form.setValue('item_10', data.item_10);
			g_form.setValue('item_11', data.item_11);

		}
    });   
}

[user_ms]

@Dhananjay Pawar 

Thank you for your reply.

Here is the script.