<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.control.Label?>
<GridPane xmlns:fx="http://javafx.com/fxml">
  <fx:define>
    <Label fx:id="lbl" text="MyText" GridPane.rowIndex="1"/>
  </fx:define>
  <fx:reference source="lbl" text="bar" layoutX="10.0" layoutY="10.0" textFill="green"/>
</GridPane>