https://scratch.mit.edu/projects/414982702/

When I press start, the pig will start moving between left and right.
When I drag it to the fenced area in the lower middle part, I want it to stay there. However, it will go right back to its pattern
How can I make it stay and stop moving in that fenced area, while it will return to the original path if I put it anywhere else?
Thank you.

I just made a separate sprite, easy enough. Here. I also changed the glide blocks, they are annoying.