Unbreakable Glass

this addon was made to have fun with friends so please respect this intension and don't use it for malicious purposes. Also please don't leave negative comments on this post about this addon being used for griefing just simply remove the addon from the world/worlds affected. Warning after removal any placed glass block/blocks will be replaced by a block with no texture and name however it can be broken 

The block looks like this

the crafting recipe for the unbreakable glass block is shapeless and involves one glass block and one obsidian in any configuration for example:

the unbreakable glass block looks like this in game:

here is an addon demo: