How to bind Field Symbol Internal Table to Adobe Form Layout ?

Requirement: -

To display data dynamically coming from different tables in Field Symbol internal table in Driver Program at run time to Adobe form Layout in form of a Table.

Problem statement:-

1) I am able to call my Dynamic internal tables to Form Interface in Code Initialization Area using below Syntax:

ASSIGN ('(ZPROGRAM_001)<LT_T_MERGE>[]') TO <lt_t_merge>.

2) But when I go to Form to bind those Field Symbol tables, it doesn't allow me to.

How can we achieve this dynamic behavior in Adobe Form Layout ? ASAP response required.