In the topic you are already familiar with the body view of a POST request sent with multipart/form-data (See the theory section Getting raw payload).
Now let's send the POST request parameters using x-www-form-urlencoded:
What will the body of the request look like in this case?
Tip: You already know that you can get the body of a POST request with call.receiveText(). Then you can output it to the console and see how the body of this request looks like.