API Connector Help - API Definitions uses []

Hi there, I am integrating into Transistor API. When configuring the API Connector to create a new episode, the POSTMAN POST works

https://api.transistor.fm/v1/episodes?episode[show_id]=12345episode[title]=test title&episode[summary]=test description

When I look to initialize and configure API Connector, it fails because of the square brackets. The connector is expecting variables.

Does this mean I can’t use the API Connector to Transistor?

For reference, Transistor API: Transistor API Reference

Got it to work by changing Body-Type from JSON to Form-data