OK, You can try to use getClass config 1. In DesignTime: YourActionColumnButton -> ImageIndex = -1 2. UniDBGrid -> ClientEvents -> ExtEvents -> function reconfigure(sender, store, columns, oldStore, oldColumns, eOpts): function reconfigure(sender, store, columns, oldStore, oldColumns, eOpts) { dataColIndx = 0; actionColIndx = 6; actionItemsIndx = 0; columns[actionColIndx].items[actionItemsIndx].isActionDisabled = function (grid, rowIndex,