Catalog Client script not working in portal

[ServicenowDev19]

I have written catalog client script on variable set.Whenever i add record in multirow variable set i need to get record count in alert.This script is working when i exceute in TRY IT Scetion. But this script is not working in sp portal when i add row in multi row variable set.

I am geeting the error--Error There is a JavaScript error in your browser console 

Script:

function onSubmit() {

var mrvsStr = parent.g_form.getValue("additional_users");
var mrvsData = JSON.parse(mrvsStr).length + 1;
//var obj = JSON.parse(mrvsStr);
//var length1 = obj.length;
alert('Number of rows in MRV is - ' + mrvsData);
//parent.g_cart.setQuantity(mrvsData);
parent.g_form.setValue('price',mrvsData);

return true;

Please help me why this script is not working in portal.

}

[ServicenowDev19]

I am getting the alert message but the length is remaining only 1 and it is not setting in that price feild.

[Anil Lande]

the code you have share was having below lines:

g_form.setValue('price', mrvsData);

return mrvsData;

Change these lines to below:

this.my_g_form.setValue('price', mrvsData);

return true;

[ServicenowDev19]

I am getting the record count in price feild but not i want to set the price of catalog item according to this count.How to acheive ths can u help me?

[Anil Lande]

Can you please share you both script? 

It is working on my PDI, want to see how it is different in your instance.

[ServicenowDev19]

The solution worked for me but another use case is that now whatever length i am getting i according to that i have to set the price.

i.e length into price of one element

function onSubmit() {


// var mrvsStr = parent.g_form.getValue("additional_users");
var mrvsStr = this.my_g_form.getValue("additional_users")|| '[]';
var mrvsData = JSON.parse(mrvsStr).length + 1;
//var obj = JSON.parse(mrvsStr);
//var length1 = obj.length;
alert('Number of rows in MRV is - ' + mrvsData);

//parent.g_cart.setQuantity(mrvsData);
this.my_g_form.setValue('quantity', mrvsData);

return true;