Unable to pass a variable parameter to jasper report - grails

Question

So, I have created a simple CRUD app using groovy on grails and I want to use jasper reporting plugin to get some simple reports on the database. I have set up a simple G:select to pick from a drop down list, and hitting the PDF icon I am bringing back a blank page. gsp is below
<div id="page-body" role="main">
<p>Please select one of the following options</p>
<div>
<g:select optionKey="id"
optionValue="artist"
name="artist"
id="MusicCatalogue"
value="${artist}"
from="${multicatalogue.MusicCatalogue.list()}">
</g:select>
</div>
<div> <g:jasperReport jasper="report1" format="PDF" name="Music Catalogue" />
<input type="hidden" name="artist" value="${artist}" />
</div>
</div>
and then the jrxml looks like the below
<parameter name="artist" isForPrompting="true" class="java.lang.String">
<defaultValueExpression><![CDATA["<parameter error>"]]></defaultValueExpression>
</parameter>
<queryString language="SQL">
<![CDATA[SELECT *
FROM
MusicCatalogue where ARTIST = $P{artist}]]>
</queryString>
<field name="ID" class="java.lang.Integer"/>
<field name="ALBUM" class="java.lang.String"/>
<field name="ARTIST" class="java.lang.String"/>
<field name="TRACK" class="java.lang.String"/>
<group name="ARTIST">
ideas????

Answer 1

Try replace
<g:jasperReport jasper="report1" format="PDF" name="Music Catalogue" />
<input type="hidden" name="artist" value="${artist}" />
With
<g:jasperReport jasper="report1" format="PDF" name="Music Catalogue">
<input type="hidden" name="artist" value="${artist}" />
</g:jasperReport>
Also, make sure that ${artist} returns a string value, else the report will use the defaultValue of artist parameter that might ruin your query.