Thanks for your reply i have tryed your solution, linking the parented nul object with to the position of my layer but when theire is a movement my layer dont even move with the my setup??!!.. an other solution would be for my to keep parallel to layer creating a nul object out of my chain but i don...

Hi, i need a little help on i guess a simple expression,
how can i make a 3d layer always being parallel to the ground iven if that layer is parented to another 3d layer wich is rotating in x and z .
thanks for your kind help.
M