Let's return to setting a message and see what's different.
Here is where raen really raen really shines.
The method's documentation and the types documentation are available. You can think of this as interactive documentation.
Next since we are using
AccountId the type is available to the form. Meaning the the form can validate an account id before submitting it, preventing the call from failing on the NEAR node:
You will also notice that now we don't get a string but a JSON object.