waterfall movement

Well, i want to make a waterfall that player can pass over it. And, i want to make it like this:

- If player move up (opposite the fall's current), player's movement will be decrease.

- If player move down (same with the fall's current), player's movement will be increase.

- If player just stand and don't move, he will slide down because the fall's current, but if he move when being slide down, he won't be down anymore.

The first and the second i can make it with event, but the third... well, i can't. So, is there anyway to do this?

Am i being ignored?

I am not a scripter, nor a mod, but I am passing by to tell you that good scripters are scarce around here. This  comment may even decrease your chances, because this comment makes you look arrogant, which could result in a loss of interest of people to make a script for you. I wish you the best of luck.

bump