App inventor sending 0's to display

I'm noob at app inventor, and i find a problem at making a metronome.
My arduino has display and bluetooth, and it work flawless when i try to send a normal text(like the "Mi" for example). But when i try to make a string so my user can input a infinite amount of data and send to the arduino it prints "0".

I inputed Dó,Dó,sec_5,Dó with my "read" command and it shows.
List_preview: ["Do", "Do", 5, "Do"]. Note: the display don't accept accents.
Number_of_objects_in_the_list: 4.
Order: 0.

Display showed: 0000.

you have some empty sockets in your blocks... you should fill them accordingly...
also are you aware, that the index in list block returns 0 in case the thing is not found in the list? see also the documentation

A very good way to learn App Inventor is to read the free Inventor's Manual here in the AI2 free online eBook ... the links are at the bottom of the Web page. The book 'teaches' users how to program with AI2 blocks.
There is a free programming course here and the aia files for the projects in the book are here:
How to do a lot of basic things with App Inventor are described here: .

Also do the tutorials to learn the basics of App Inventor, then try something and follow the Top 5 Tips: How to learn App Inventor


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

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Thanks for the feed back, it is so reliever receiving a message after 5 days