Help with sprites

[YoungNelson2010]

In SMBX2b5, i create a sprite of a tile to modify the ground sprite. I save it in my episode folder in a folder called "Custom GFX," and the file name is the ID. But when i restart the editor, the change doesn't take effect. What should I do?

[mariobrigade2018]

In SMBX2b5, i create a sprite of a tile to modify the ground sprite. I save it in my episode folder in a folder called "Custom GFX," and the file name is the ID. But when i restart the editor, the change doesn't take effect. What should I do?

The folder needs to be named after the level file. (Ex: A level file is called “crumblingCastle.lvlx, so the folder containing the custom assets is called “crumblingCastle”)