Getting Empty PDF form content while creation of PDF from absl script

Hi Experts,

I need to create a Custom PDF form from Custom object and We need to attach it under the Attachement folder .

We have followed the below steps:

1.Created an Action to write the absl script which can generate the pdf form

2.Created a custom pdf form and we are designed it as per our requirement

When we excecute the absl code i.e "OutputManagementUtilities.GetPDF(this, FormTemplateCode, "E")" method, We are getting pdf content as empty , its not at all generating the Binary object. Please can anybody tell me , Why we are getting empty content?

for more reference , I have attached the debugging Screen-shot. Please can anybody help me to resolve this.

And I have a doubt, if i get answers it would be more helpful to understand better.

1. Is it possible to create pdf forms based on the sub node data? if Yes , how to achieve please explain to us.

Thanks in Advance.

Regards

Ravi