The script for Firebase test lab Robo test

Question

I have a flutter project and I want to try Robo test for it. I don't quite understand how to write a specific script, I tried to do so, but then a matrix for testing is not created (everything is OK without it), I loaded it in the form of json:

{
"scenarioLabels": ["loginScenario"],
"actions": [
  {
    "action": "click",
    "description": "Click the 'Enter' button",
    "widget": {
      "text": "Enter",
      "type": "Button",
      "timeout": 10000
    }
  },
  {
    "action": "typeText",
    "description": "Type in phone number",
    "widget": {
      "text": "Input phone number",
      "type": "EditText",
      "timeout": 10000
    },
    "text": <phone number test accounts>
  }
  ....
]}

I also suggested cutting it through Android Studio, but I don't understand what these tools are in the - Firebase - Test lab: "Please create an Android Application or Blaze Command Run configuration with a valid module and Default or Specified launch activity."