Show the PCS task payload in VBCS

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Hi Experts,

Created a PCS application with a form having few fields like first name, last name, email address, etc, and deployed it on the PCS. Created a custom VBCS application to kick off the pcs process using the VBCS application. I'm also adding the functionality to show all the tasks in a table. I'm able to show the task using the inbuilt tasks option using Add Data option. This only shows the metadata of the task like id, creationUser, creationDate etc. 

I want to get the payload of the task such as first name, last name, and email address and show it in a dialog box when a particular task is selected from a table.