@folala, do you need the codes or troubleshooting to get existing codes to work?
ETA: if you need the codes, they are: waterfall_1_short, waterfall_2_med, and waterfall_3_tall. Note that the numbers (width) and the heights (short, etc.) are interchangeable (i.e you can configure it like waterfall_3_short, etc.). If it isn't working, try deleting the fog emitter and putting in a new one. You sometimes need to enable it, also. If you're in build/buy mode the fog emitter won't do anything, but once you're in live mode, it should work. LMK if that doesn't make sense. SimEve has a great set of videos on YouTube of all kinds of different codes and what they do, btw.
ETA (again): it also helps to put an emitter at the base of your waterfall with the code: waterfall_1_shortsplash. I'm sure there are other splash codes, but I don't have those handy at the moment. HTH!
