DTP Prompts are not coming up when saving a form

Hi guys,

I am very new to DTPs and trying to study its behavior trying different scenarios. One of the scenario that I am testing is that

"User will select company from Restricted List in the prompt.

If user selects 'Entity 1' from the list, then E301 member should be assigned to DTP_Entity. If user selects 'Entity 2' from the list, then E101 member should be assigned to DTP_Entity."

Note: Even the value is also being asked in DTP

So, I have tried the above in the designer format in a template (Sample_Template4) and called this template in a rule (test rule plan 1) as shown below.