Try add the "set animation frame" right after you create the new object and "stop" the animation.
Yeah my problem was that the Animation Speed in the Object was different that 0 so when creating the object it will start animating... another problem was that the position of the newly created object was being put at index -2 instead of -1 ... don't know why I thought that the new instance already existed when creating object... but it didn't so the last was -1.
Thanks.