Joining a variable to a URL?

[Taifun]

Can you see the red error marker on your TinyDB.GetValue block?
Don't use that block during initialization, you could do for example

without need to use a variable

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

FAQ Section: Debugging

Introductory Testing techniques, including Do It - MIT Sample Connect -> Companion sequence - @ABG How to Read and Understand a Runtime Error Message - @ABG Common Runtime Errors - @TimAI2 How to Teach Debugging thread - Feb 2025 Advanced Do It' to view procedure results, event arguments and local variables How to run Logcat How to use Do It in a loop Screen1.ErrorOccured message numbers SteveJG monster list of things you should not do How to show raw responseContent from your app wh…

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