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Issue with moving 3D object with detected Cylindrical Target by Vuforia

I am detecting a cylindrical target using Vuforia extension for Unity 3D. I show a 3D object, a bottle, beside that cylinder when detected. The problem is that When I rotate the cylinder object in real world, bottle moves with it as well. But the problem is when bottle tends to enter the background. I hope the image link can explain the issue.

https://www.dropbox.com/s/rrfxd4w4p05byit/2014-04-28%2011.52.00.png