Action Iteration/Loop using Zoho Flow

Action Iteration/Loop using Zoho Flow

Trying to use Zoho Flow for automating following

Context - A zoho form entry which has image upload field with upto 5 images setting and files are saved into Workdrive. After form is submitted need to create folder based on some fields and move files into it.

Note - Can not use the "Manage form attachments" settings as files can be. > 20MB and those needs to be moved to a folder. Already tried various ways but need 30MB limit with Auto folders creation or need to retain some part of original file name which is not available :(

Problem Statement - 
Zoho form provides values of image upload files as  

[
{
"extension": "jpg",
"name": "Sample1.jpg"
},
{
"extension": "jpg",
"name": "Sample2.jpg"
}
]

As Image Upload might have 1 to 5 files. 
As mentioned in data mapping - https://help.zoho.com/portal/en/kb/flow/user-guide/create-a-flow/articles/data-mapping#Mapping_list_or_array_elements, able to get the file name and id, so to work with Workdrive actions

But how to repeat this actions for all images in the "image upload"

Tried following
1. Passing dynamic variable in flow like below does not work. - 
  1. ${trigger.questions_and_answers[<dynamic variable>].answer}
2. Looping inside flow does not actually execute a loop.



Any way to achieve? 
Need to extend form to allow users to upload upto 25 files.