how to select the object when gaze is hover in Idealens.

Unity Engine
1

I need an idea how to select the object when gaze is hover on object on idealens VR.

2
3

I want to select the 3d object. But the video is showing to select the button.

4

At 12:52 this video shows how to make interaction with 3d object, cube:
youtu.be/saPTSdvacLE?t=12m52s

5

where i can get the code of it…