Hi,<div><br></div><div>I am using the sample xml document(xyz) shown below:</div><div><br></div><div>&lt;entry xmlns:libx=&quot;<a href="http://libx.org/xml/libx2">http://libx.org/xml/libx2</a>&quot;&gt;</div><div>  &lt;libx:libapp&gt; First libapp &lt;/libx:libapp&gt;</div>

<div>  &lt;libx:libapp&gt; Second libapp &lt;/libx:libapp&gt;</div><div>&lt;/entry&gt;</div><div><br></div><div>I am using BaseX 6.5.2 and am trying to use a variable along with a namespace prefix in my sample xquery like so: </div>

<div><br></div><div>declare variable $libx_ns as xs:string external;</div><div>declare namespace libx=$libx_ns;</div><div><br></div><div>let $type := &#39;libapp&#39;</div><div>return doc(&#39;xyz&#39;)/entry<b>[libx:{$type}]</b>[1]</div>

<div><br></div><div>When I pass the value &quot;<a href="http://libx.org/xml/libx2">http://libx.org/xml/libx2</a>&quot; to the parameter libx_ns and run the above xquery I see the following exception:</div><div>[XPST0003] Incomplete expression.</div>

<div><br></div><div>However, the following xquery works:</div><div><br></div><div><div>declare variable $libx_ns as xs:string external;</div><div>declare namespace libx=$libx_ns;</div><div><br></div><div>let $type := &#39;libapp&#39;</div>

<div>return doc(&#39;xyz&#39;)/entry<b>[libx:libapp]</b>[1]</div></div><div><br></div><div>The child nodes could be libx:libapp or libx:module etc. So, I will have to use a variable rather than hard wiring the actual child name. But, I am not sure how to use a variable along with a namespace prefix. Am I doing something wrong or is this a bug ?</div>

<div><br></div><div>Thanks,</div><div>Sony</div>