can mygui widget attach to the OgreSceneNode?

I had a app , it is use mygui and a npc role. the npc role need to upper layer of the mygui. i had success use overlay.add3d(Node) to slove.
but when i add the process the NPC talk. i got a problem , the dialog always down the NPC body . can anyone tell me how to do?

You can't attach widget to specific node, but you can write simple controller, that will move widget according to node position on screen.
the dialog always down the NPC body .
Also I don't understand what you said.

Projection your NPC on screen, and move widget to projection.

to altren : my mean is the dialog zorder is down the npc body. （like mean dialog renderqueuegroupid is min then npc body, but i can't change the gorupid）

thaks for my.name.