Accesing vaadin combobox present in a row where onblur event occurred in Gr

I have a Horizontal layout in which the components present are : 1) TextField 2) ComboBox.

So on click of a icon multiple rows (Horizontal layout are added into a grid layout).

The Textfield has a BlurListner() associated with it. The BlurListner sets a values in Combobox.

Actual issue is : Suppose you add multiple Horizontal Layout’s to grid layout and then in first text field Blur listner is invoked then value is populated in last row. So i need to populate value in adjacent comboBox.

So can anyone help me how to access the adjacent combobox on occurance of event.