📚Read / Write / Simulate

Reading and writing contract are pretty straightforward.
You can also simulate transaction by clicking 'CALL STATIC' button. 
It doesn't actually send transaction but simulates it without spending gas.

In solidity, you can't get a return value if it isn't a view function even you put return in the source. But you can get that value if you query it through that call static button.

Happy debugging! 😄