The flow stops due to an error in the JSON Parser step

[NaoyaT]

I have configured the following actions in the flow:
① Script step
② REST step
③ JSON Parser step

If step ③ returns an error, the entire flow stops, and subsequent processing does not run.
Therefore, I contacted Now Support and would like to change step ③ to a Script step to prevent the flow from stopping, but I am unable to configure it properly.

Is there a way to do this?

I want the “outputs” to look like the image.

The processing in step ③ is as follows:

■Source
・Source data：②REST step > 応答本文
-----
{
    "Responcemessage":"Success",
    "Return": {
      "detail":"True",
      "SubnetName":"subnet-a",
      "NSG_Name":"nsg-b",
      "Delegation":"-"
    }
}
-----
■Target
・Label：root
・Name：root
・Type：Object
・Mandatory：false

The script when step ③ is changed to a Script step is as follows.

・Required Runtime：Instance
・Input Variables
　　response_body：②REST step > 応答本文

・Script

(function execute(inputs, outputs) {

    if (!gs.nil(inputs.response_body)) {
        try {
            var responseObj = JSON.parse(inputs.response_body);

            outputs.Responcemessage = responseObj.Responcemessage || "";
            outputs.Returndet = responseObj.detail || "";
            outputs.Returnsub = responseObj.subnet_name || "";
            outputs.Returnnsg = responseObj.nsg_name || "";
            outputs.Returndeleg = responseObj.delegation || "-";

        } catch (ex) {
            outputs.Responcemessage = "failed";
        }
    } else {
        outputs.Responcemessage = "failed";
    }
})(inputs, outputs);

・Output Variables
　　Responcemessage
　　Returndet
　　Returnsub
　　Returnnsg
　　Returndeleg

[Bhavya11]

Hi @NaoyaT ,

As per my analysis why your script is not working

JSON  :

{
    "Responcemessage":"Success",
    "Return": {
      "detail":"True",
      "SubnetName":"subnet-a",
      "NSG_Name":"nsg-b",
      "Delegation":"-"
    }
}

therefore correct path will be 

responseObj.Return.detail

responseObj.Return.SubnetName

responseObj.Return.NSG_Name

responseObj .Return.Delegation

can you try this of fetching the data