multiple field renderer

[CarolineCochrane]

Currently when publishing a layer with multiple field renderer symbology you are met with the following error message:
 

00085: Layer uses an unsupported renderer
http://resources.arcgis.com/en/help/main/10.2/index.html#//00sq0000009v000000
Please can this functionality be considered for future releases? Multiple fields being used for rendering would be of great benefit to some customers.
Thanks for consideration.

Caroline

[ChrisSambol]

We shouldn't have to add another field to our data to symbolize data since the functionality exists in desktop.  With the workaround we now have to manage an additional field, as well as duplicate data, which we are attempting to avoid.  Please include in future enhancements for ArcGIS Online as this would be very powerful.  At least if it was only 2 field and not 3 it would be better than nothing.  Thanks.