How to bind on/off line wrapping?

Question

Sublime Text

I want to bind line wrapping on and off. How to do it?
I tried like this (in keyboard shortcuts settings):

{ "keys": ["alt+z"], "command": {"word_wrap": true}},
{ "keys": ["alt+shift+z"], "command": {"word_wrap": false}}

but it doesn't work

Answer 1

Happened!
I found in the list of default abbreviations:

{ "keys": ["f6"], "command": "toggle_setting", "args": {"setting": "spell_check"}}

and changed it like this:

{ "keys": ["alt+z"], "command": "toggle_setting", "args":{"setting":"word_wrap"}}