diff --git a/GxColumns.bbj b/GxColumns.bbj
index 225e6bce..e52e1fae 100644
--- a/GxColumns.bbj
+++ b/GxColumns.bbj
@@ -609,6 +609,13 @@ class public GxDefaultColumnDefinition extends GxColumnDefinition
rem */
field public BBjString ChartType! = null()
rem /**
+ rem * The field of the tooltip to apply to the cell.
+ rem *
+ rem *
#Configuration
+ rem *
#ColumnsRenderer
+ rem */
+ field public BBjString TooltipField! = null()
+ rem /**
rem * Get pinned left constant
rem *
rem * @return BBjString left
@@ -1022,6 +1029,7 @@ class public GxDefaultColumnDefinition extends GxColumnDefinition
column!.addProperty("valueParser",#getValueParserExpression().toString(),err=*next)
column!. add("icons",iff(#getIcons().entrySet().size() <> 0 , #getIcons() , null()),err=*next)
column!.addProperty("chartDataType",#getChartType(),err=*next)
+ column!.addProperty("tooltipField",#getTooltipField(),err=*next)
filterEnabled! = #getEnableFilter()
filter! = #getFilter()