How to display a JClient LOV with a empty textfield at startup?

Hi,
we develop an application using JClient to connect a swing client to a bc4j middletier. In one special form consisting of three LOVs (3x label,textfield,button ->LovBinding) we want two of the LOVs to display a empty textfield when the form is opened the first time. The standard LovBinding shows the first row of the corresponding viewobject initially, pretending that the user already has chosen a value. Is there an (easy) way to override this behaviour?
And what to do in the following scenario:
The user chooses a value from a LOV, that value is displayed in the textfield. Now the user changes his mind and wants to be the LOV-textfield empty again. Currently there's no solution for this.
We can think of several workarounds, but none of them seems to be a good solution...
Any ideas for that?
Thanks,
Torsten

Sorry, I try to be a bit more precise:
It's not clear whether you want the "Lov dialog" to show no selection on startup or the form that uses the LOV to display nothing in the "textField" on >startup?
Could you elaborate on this? A simple scenario may help. It's NOT the Lov dialog that should show no selection on startup. I wanted the textfield to display nothing, until I press the button which invokes the Lov dialog. The lov dialog allows me to select something and after pressing ok in the lov dialog I see me selection in the textfield.
The scenario is the following:
Imagine a form showing a combobox which allows the select a special type of value, does not matter. Additionally you have a lov combination consisting of a textfield and a button. The textfield should display a lookup value which can be selected via a lov dialog, which is invoked by the button.
And you have a "calculate" button, which has no binding. This "calculate" button runs some kind of code that takes the value of the combobox and the value of the lov's textfield (if a value was chosen) and does something.
The problem is the "if a value was chosen". I like to see an empty lov's textfield to indicate that nothing has been chosen solong. If I press the "calculate" button after choosing a value in the combobox and having nothing in the lov's textfield, the lov's textfield should be ignored by the following method.
Again, if you are using JComboBox/JListBox for Lov, then the default windows key to clean selection is Ctrl+(Mouseclick on the selected row)
If you want to display/allow no selection in the JULovButtonBinding's LovDialog, you pretty much have to do this by providing a custom LovPanel instead of >using the default one and implement the "no-selection" logic there.
And in case of no-selection, set the currency on the LovRSI to no row (call reset()). Are there more shortcuts like Ctrl+MouseClick in JClient?
Ok, what I intended was the following:
We have the scenario described above. The user selects a combobox value, then opens the lov dialog by pressing the button, chooses some value and presses ok in the lov dialog. Now he sees his selection in the lov's textfield. But: he changes his mind and thinks it would be better to reset the lov's textfield to the empty state, before pressing the "calculate" button. Because there is no kind of reset for the lov's textfield, the user has no chance to do what he wants.
Question is, can you think of an elegant way to solve this problem?

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