setPropertiesFromJSON - childComponents

[Lindon]

Can I not use the childComponents attribute when doing setPropertiesFromJSON, like this:

	Content.setPropertiesFromJSON( "BckBack",{"x": 190,"y": 210,"width": 650,"height": 500,
		    "itemColour": "0xFF000000",
		    "itemColour2": "0xFF000000",
		    "borderSize": 1.0,
		    "childComponents": [
		      {
		        "type": "ScriptLabel", "id": "LFOBackLabel1","x": 157.0, "y": 73.0,
		        "parentComponent": "BckBack", "fontName": "Gobold Thin",
		        "textColour": "0xFFAAAAAA", "text": "Speed", "height": 14.0,"width": 40.0, "editable": "0" },
		      {
		        "type": "ScriptLabel","id": "LFOBackLabel2", "x": 211.0,"y": 73.0,
		        "parentComponent": "BckBack",   "fontName": "Gobold Thin",
		        "textColour": "0xFFAAAAAA",  "text": "Fade In",  "height": 14.0, "width": 44.0,"editable": "0"  }
		    ]
});

I get a component but none of its children show up... or am I just doing it wrong?