freezing 3D object,freeze 3D object

you wrote the answer but i want to use button , how can i do it . can you help me ?,you wrote answer but i wanna use button how can i freeze this object?

???..???

İ create a image target and 3D object, the 3D object
İs tracking image target .It is no problem this part.
I want to Stop the
Tracking ,when i click a button so I want to
show the 3D object even lost target , even the device
Cam show the another place.Because
İ must work on the 3D object . Can you help me please…
My email cagdaskarabay1@gmail.com