Lives are not working

Our lives in our game app is not working. I copied how the blocks looked like in this website:
but it is really not working

Have you tried it with the .aia file (at the bottom of the tutorial)

yes I did. However the lives button are not inside the aia file so I need to create new one(but still copied what blocks used in the website)

Did you read the Questions and Answers section of the tutorial. It covers exactly what you want. If you want help regarding a specific part, you can post the relevant blocks here.

I was actually having trouble understanding the question and answers block and I don't know the procedure and selected blocks as well