Grid Editor - Clear Value on Editor2 based on Editor1 value

[Tbaseflug]

I have two columns - a combobox in each editor - based upon condition in combo 1 - clear values in cb2? tried this - but not working - the alert is firing - also tried clearValue()




<Change Handler="if (this.getValue() == 'Per Diem'){alert('Per Diem');#{ComboBox2}.setValue('');}else{#{ComboBox2 }.setVisible(true)};" />