App inventor receive strings

[fernando]

Dear Mr. Juan Antonio

First of all, congratulations for your projects and tutorial, the best of App Inventor in all internet and have helping me a lot .
I tried to use your exemple :148.- Wemos D1 R32 ESP32. Obtiene humedad y temperatura por WiFi y lo presenta en LCD. to receive from arduino 2 informations: the device IP address and one string but I receive the following mesage:
Bad arguments to select list item .The operation select list item cannot accept the arguments.
I have been attached part of my scketch and app inventor blocks.
Could you please give me any idea how to solve the problem.
Thanks, best regards.