Modifying disabledRanges Value

programming flash
1

I was wondering if anybody knew how to append the disabledRanges property of the dateChooser Component, kinda like this(assuming cal as the instance name):

dRange = [{rangeStart: new Date(2009,0,0), rangeEnd: new Date(2009,0,20)}];
cal.disabledRange = dRange; // will disable all up to the 20th

I want to turn dRange into:
*dRange = [{rangeStart: new Date(2009,0,0), rangeEnd: new Date(2009,0,20)},{rangeStart: new Date(2009,0,22), rangeEnd: new Date(2009,0,31)}];
cal.disabledRange = dRange; // will disable all up to the 20th then all the dates past the 21st effecively disabling all dates but the 21st
*
something like:

*dRange += [{my new dates…}]; *

…But that doesn’t work