@felmue ,
I am running V2.3.8, and all I see under System is "Execute mpy code (e.g. import)" and "Execute mpy code". I tried putting the block

Execute mpy code [print("## HELLO ##")]

in the loop, but it had no effect. In fact, it wasn't translated to python code in the code window.

Did inserting python code directly get dropped?
Michael Huster