Code don't render

Hi,
I’m pretty new to Webix, so please forgive me for what may be an obvious question. I’m trying to create a page but don’t render.

this is the code:

webix.ready(function(){
		    webix.ui({
		        type:"line",
		        container:"testA",
		        rows:[
		        	{ template:"Row 1"},
		        	{ template:"Row 2"}
	    		]
	    	});
		});

firebug display “TypeError: h is null”

Thank you for a hint.

Just be sure that container with id=“testA” does exist on the page. All other is correct.

You can remove container property and init the full screen UI by the way

http://webix.com/snippet/e7b26370

Thanks so much!