Send Json to Arduino (ESP32) serial via Bluetooth (need a little help here please)

MIT App Inventor Help
14

I don't quite understand what you are looking for.
You may want to Send Text the x,y values ​​of the joystick, so in the joystcik.TouchUp block, let
forward = x
lateral = y
SendText

I need help iam using a joystick and i need to change lateral and forward paratemer according to the angle i got on a joystick