I have a suitelet that has a field "custpage_information_json". The field value is set server side using form.addField.....defaultValue = . I then have a client side script that runs on document.body.onload and tries to read the value of that field. But it shows it as blank. When I run the exact same line of code in the console it works just fine. Is there a better way to pass a value from server side to client side?