Ok, going to the point here it is a Gravity Hotspot, actually is a modification of the WaterHotspot created by SteelRaven7 that you can find here viewtopic.php?f=16&t=30850 by the way thanks SteelRaven7.
It took me a while to understand some scripting cause I don't know S%€T.
Basically it allows you to change the "x" "y" and "z" parameters so the movement is in all directions if you want.
I found that to move in "x" and "z" only, you have to put the value "13550" in the axis "y" so the Character doesn't fall (by default the axis "y" is in 13550)
You can experiment with the values
Put the files in the right place...and just load an object
(go to Data/Custom/elegaro/Hotspots/Objects/gravity_hotspot.xml and Done!)
Enjoy