Append to ArrayDataprovider in action chain

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Hi Experts,

I have a REST API that is sending the response in JSON. Created an action chain and calling the rest API to fetch all the dataset. What I want is in the action chain, loop through the dataset, put an if condition, and if a condition is true then append the current dataset to the ADP variable.

Is this append is feasible in the Action chain, if yes please suggest?

Regards,

Ankur