Hi @ArijitDas, welcome to the community! 
Adola currently doesnât support creating multiple records from a JSON array with custom Actions.
The good news is that there is a workaround with external collections, once you have succefully set up your Url endpoint you can âfilterâ your list by parsing parameters.
Itâs no perfect and in some use cases this canât be emplemented, but until the devs find a solution thatâs all we have 