The code I have is:
When green flag is clicked
(Forever) Change position to x-180 y13
Move forward 10
Move forward 10
Move forward 10
Change to background 2
Change position to x-180 y13
Move forward 10
Move forward 10
Move forward 10
Change to background 4
Change position to x-180 y13

When I press the green flag, this doesn't work
Why?

Advance 10
Advance 10
Advance 10
Change to background 2
Change position to x-180y13
Advance 10
Advance 10
Advance 10
Change to background 4
Change position to x-180y13
“Advance 10
Advance 10
Advance 10
Change to background 4
Position x-180y13 ”
It works if you repeat the “Advance 10” three times instead of using the block three times. For the time being, it wakes up all the way before the first advance 10.

Actually, I'm Japanese.
Where are you from?
Finally I will speak in Japanese.
「すごい？」

How do you know it doesn't work? You don't appear to be using the pen so the sprite will obey all those blocks before the screen is refreshed and the loop runs again. Try adding a wait in the middle of the loop or changing the script so the end position is not the same every time you reach the end of the loop.

The whole thing is happening faster than you can see. Yes, add some waits in there.
Look what happens if you swap out your “switch background to” blocks for “next backdrop” and add an extra backdrop.

Thanks for all these responses, guys! I've only been here at Scratch for one day and I can already see that it is a really active and supportive community!

treinslave wrote:

Actually, I'm Japanese.
Where are you from?
Finally I will speak in Japanese.
「すごい？」

I am American and I only speak English (as well as a little bit of Spanish), so I have no idea what you just said. But hello and thanks for the help!

deck26 wrote:

How do you know it doesn't work? You don't appear to be using the pen so the sprite will obey all those blocks before the screen is refreshed and the loop runs again. Try adding a wait in the middle of the loop or changing the script so the end position is not the same every time you reach the end of the loop.

Thank you for the help, and you're right I should add a wait, but what do you mean by “using the pen”? I have sprites, if that's what you're asking.

MarsBURGER27 wrote:

deck26 wrote:

How do you know it doesn't work? You don't appear to be using the pen so the sprite will obey all those blocks before the screen is refreshed and the loop runs again. Try adding a wait in the middle of the loop or changing the script so the end position is not the same every time you reach the end of the loop.

Thank you for the help, and you're right I should add a wait, but what do you mean by “using the pen”? I have sprites, if that's what you're asking.

It looked like you might be trying to draw a line but obviously not.

Ignore your code and tell us what you're trying to achieve. Code runs very quickly and the frame is only redrawn at the end of the forever loop so all you'll see is the sprite at that position and background 4 - you won't see anything else that happens during the loop since Scratch is not redrawing the screen after every block and even if it was it would be so quick you'd only see one state.