Setting an entity unbreakable

[Robby]

I want to make a bottle (in this case a wine bottle) unbreakable. I did this by checking the unbreakable box. Now, if I throw this bottle on the ground, you hear a quick hit and then it disappears.

How can I fix the disappearance?

This works on doors, but I never tested on bottles. Maybe it is supposed to be that way? I'll test it quickly.

EDIT: Tested it out. Exactly like you explained. Try using a script that makes the bottle's health like "99999". It is the "SetPropHealth" if I remember correctly.