And the end of the day... sure, but I wanted something more sophisticated I still wonder what's wrong with "move to". Maybe I'll get it next time. And as I promised - I'll pack source files and publish them as some (silly) example of advanced menu with Read/Write script.
Hmm I wonder why move object to isn't working correctly when you call the action to update it at begin of scene. Strange.
My method would have been to use animations (single frame infinite loop) & to update their positions with a single line of Lua script. If you defined the width of the movement area then updating the position would be as simple as calling a single function to update the position based on vol percentage which the function would calculate into x,y coordinates.
I used animations instead of moving objects and its whole polygon areas. Also it is usable in interfaces by that which makes it more interesting for me to use "anywhere". The only downside of this is that you technically have to do more math and stuff instead of using predefined areas or percentage which can be chosen (0%,10%,20%,...)
I still wonder what's wrong with "move to". Maybe I'll get it next time. And as I promised - I'll pack source files and publish them as some (silly) example of advanced menu with Read/Write script. 
