Truly fugly but
${__javaScript('')} seems to work.

I'd question why you need blank (would spaces work?) . other options would
be BSH listener to form the variable as you want.
regards
deepak

On Thu, Oct 15, 2009 at 8:59 AM, Wei Z <[email protected]> wrote:

>
> Hi,
> I want to return a value null (i.e. blank) if now matches are found. I've
> tried few things, e.g. leave the default value field blank, put a variable
> name in the field and define the variable to have value "", etc.
> But I just can't get a null value. Has anybody done this or does anybody
> know how to do this? Your help would be much appreciated.
>
> Wei
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