Array of box not supported?

To insert into a box[ ], I need to convert the individual boxes into a string. I get a "malformed array literal" error with any of the following formats for a 1 dimensional array with two boxes:

{"1.0,1.0,0.0,0.0","10.0,10.0,0.0,0.0"}
{"((1.0,1.0),(0.0,0.0))","((10.0,10.0),(0.0,0.0))"}
{"(1.0,1.0),(0.0,0.0)","(10.0,10.0),(0.0,0.0)"}

Can anybody suggest other things to try, or do I conclude that box[ ] isn't supported?