http://ai2.appinventor.mit.edu/?locale=ko_KR#6019414547103744
I am a student who is doing coding homework. While watching the video, the condition statement "If" disappeared in the thickness increase column, so I would like to ask if it is wrong. In the video, it says when you clicked Viewer-when you clicked on it, so please ask. Please understand that English is spoken through Papago.
Your link is of no use, because it is only linking to your projects, no-one else can access it. If you want to share your aia project then export your project from the projects menu and upload it here.
Alternatively, share an image of your blocks.
A link to the video you are following might also help.
(I edited your topic title to something more useful)
Please download and post each of those event block(s)/procedures here ...
(sample video)