Getting system messages, "Bad arguments to", while using WIFI and BLE

It looks like one of these blocks return NA

  • this is a multiplication block

So somewhere in your blocks you are multiplying an empty string with 0.24

Use the companion app and Do it to debug your blocks, see also tip 4 here App Inventor: How to Learn | Pura Vida Apps
see also Live Development, Testing, and Debugging Tools

Taifun


Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by icon24 Taifun.