How to trigger autocompletion on space character?

[BPS]

Hello

I have my plugin: ~/config/sublime-text-3/Packages/HTML.

.sublime-settings

{
	"auto_complete": true,
	"auto_complete_triggers": [
		{
			"selector":"text.html",
			"characters": [
				"<", " ", "&"
			]
		}
	]
}

why space does not trigger auto completion list?

thanks