Create a videos list

I’m using MIT app inventor and TAIFUN extension to create a videos list, then be able to share it but it doesnt seem right. could someone take a look of the codes and let me know what is wrong with it. Thank you very much.

please ask only in the forum of the builder you are using
thank you
I already answered your question somewhere else
writing the same answer again and again is somehow annoying, isn’t it?

Taifun