Grid Configuration - Row Based State Definition

Anyone have success setting up row based state definitions using a grid configuration? 

Below is a code snippet of my configuration. I have checked that the column "fieldName" matches the field name below, values in my table the states "value", and that I am able to apply general styling to the grid. (see the commented out style).  Any ideas on what else could be going on?

 "rows": {
 "selection": "single",
 "defaultSelectedRows": "",
 "minHeight": "30",
 "autoScroll": true, 
 "rowFormatter": { 
 "stateDefinition": { 
 "name": "Entry Difference Indicator",
 "fieldName": "entryDifferenceIndicator",
 "type": "not-fixed",
 "states": [ 
 {
 "name": "Different Entries", 
 "value": "noEquivalentEntry",
 "comparator": "==", 
 "styleName": "rowFormatterStyle" 
 }
 ]
 }
 }
 },
 "styles": {
 "rowFormatterStyle": {
 "backgroundColor": "blue",
 "fontWeight": "bold"
 },
 /*"rowBackgroundStyle": {
 "backgroundColor": "blue",
 },*/
 }