Getting the name of selected Node in Adobe 3D PDF

Hello,

I'm trying to use the following code to get the name of the selected node for a 3D object in my PDF.

/***************************************************************************************** ***************/

var c3d = this.getAnnots3D(this.pageNum)[0].context3D;

c3d.activated = true;

var select = c3d.scene.selectedNode.name;

/***************************************************************************************** **************/

I get the error

/***************************************************************************************** *************/

TypeError: c3d.scene.selectedNode is undefined

19:Console:Exec

undefined

/***************************************************************************************** *************/

I have placed my code at the folder level.

Can someone help please?