I designed blocks for two buttons that activate ESP32 LEDs via Bluetooth BLE.
The BLE connection works, and I have a button that lights up my first LED.
The second button gives me the error [I need help with an error. For input string: "0000efgh"]. The block adds four 0s before the text.
I see no For Each blocks in your code, so this is baffling.
I do note a couple of things:
One of your Button Click events has had its blocks fall loose. I suggest doing a right click Cleanup Blocks in the Blocks Workspace to shake the tree and see what falls out.
Your characteristic UUIDs are unusually short.
I suggest posting your ino sketch code, so we can match incoming and outgoing data types.
Also, export and post your aia file, so we can check extension versions.
