Object Data Path Input node needed in Animation Nodes There is Object Data Path Output but no Input

How can I manipulate spline Bevel Curve Points Radiuses with Animation Nodes? 

How to get array of splines[0].bezier_points[n].radius, 
modify it and copy to other spline. 
Input spline is freehand drawn with tablet.
Spline Info node can be used to get the radii of the points, while Set Spline Radius node can be used to set the radii of the points.