Layer List Legend Value Not Displaying

[LloydBronn]

I'm trying to add units to a layer list legend in a map service. I changed the generic <VALUE> in ArcMap to "Fahrenheit" but this does not show up when the service is published. I only see the layer name and the legend items. Is this something I can set in the JS? 

[KenBuja]

The REST service just doesn't include that part of the legend, so I got around that by either including it in the layer name or the symbology's label

[LloydBronn]

OK. I did put the units in the layer name on another service.