checking parameter in JXTemplates

[Мария Григорьева]

Hello!

 

I have the parameter  " ${data.get("length")} " in my JXTemplate.

 

How to check it's value is it NULL or not ???

 

(the trouble in the quotes)

 

<jx:choose>

     <jx:when test="???">

        <h2>no data</h2>

                  </jx:when>

      <jx:otherwise>

       ::.

     </jx:otherwise>

</jx:choose>