Did you try using Java dialect instead of MVEL?<div><br></div><div>Best Regards,<br clear="all"><br>XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX<br><br>Esteban Aliverti<br>- Developer @ <a href="http://www.plugtree.com" target="_blank">http://www.plugtree.com </a><br>

- Blog @ <a href="http://ilesteban.wordpress.com" target="_blank">http://ilesteban.wordpress.com</a><br>
<br><br><div class="gmail_quote">On Thu, Feb 2, 2012 at 11:47 PM, vadlam <span dir="ltr">&lt;<a href="mailto:sreeram.vadlamudi@wellsfargo.com">sreeram.vadlamudi@wellsfargo.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<br>
when<br>
<br>
$emptyDocs:java.util.List(size&gt;0) from collect ( Document( field1== null ||<br>
<div class="im">== ( &quot;&quot; ) , field2 == null || == ( &quot;&quot;) ) )<br>
<br>
then<br>
<br>
<br>
    //insert an error<br>
    Error fact0 = new Error();<br>
    fact0.setErrorCode( &quot;code1&quot; );<br>
    insert(fact0 );<br>
<br>
</div><div class="im">for (int i=0; i &lt; $emptyDocs.size(); i++){<br>
        retract( $emptyDocs.get(i));<br>
        }<br>
<br>
<br>
end<br>
<br>
</div>when I do a validate on this, I get an error as below<br>
<br>
unable to resolve method using strict-mode:<br>
org.drools.spi.KnowledgeHelper.$emptyDocs()] [Near : {... for (int i=0; i &lt;<br>
$emptyDocs.size(); i++){ ....}]<br>
<br>
<br>
am I making a mistake somewhere ?<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
View this message in context: <a href="http://drools.46999.n3.nabble.com/how-to-retract-all-documents-created-in-the-following-scenario-tp3711226p3711512.html" target="_blank">http://drools.46999.n3.nabble.com/how-to-retract-all-documents-created-in-the-following-scenario-tp3711226p3711512.html</a><br>


</font></span><div class="HOEnZb"><div class="h5">Sent from the Drools: User forum mailing list archive at Nabble.com.<br>
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</div></div></blockquote></div><br></div>