Automaton batch script is failing for mandatory reporter field

Test Automaton batch script to create automation task and to upload the test results is failing for mandatory reporter field. I am struggling with this issue from last 2 days. Any help will be appreciated. I have a feeling, multiple people reported this issue. So they have it in the documentation as troubleshooting steps.

Here is link for documentation.

https://support.smartbear.com/zephyr-for-jira-cloud/docs/continuous-integration/integration-script.html

I referred to the documentation and updated the batch script with the following statement.

set "$mandatoryFields={"reporter\":{\"label\":\"VKulkarni\",\"name\":\"VKulkarni\",\"id\":\"557058:5de7e0c67474110e23122b6d\"}}"

And updated the post statement with the following fields

-F "mandatoryFields=%$mandatoryFields%"

Now, I get the following error.

curl: (26) couldn't open file "name"