Yes that is the MVEL bug that a fix is on the way for. <br><br><div class="gmail_quote">On Wed, Jan 27, 2010 at 10:29 PM, Esteban Aliverti <span dir="ltr">&lt;<a href="mailto:esteban.aliverti@gmail.com">esteban.aliverti@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Same problem here but in a Rule containing an accumulate:<div><br></div><div><span style="font-family:monospace;font-size:11px;color:rgb(51, 51, 51)"><ol>
<li style="background-color:rgb(255, 255, 255);background-repeat:initial initial">

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">rule &quot;fromAccumulateRule&quot;</div></li><li style="background-color:rgb(248, 248, 248);background-repeat:initial initial">

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">        dialect &quot;mvel&quot;</div></li><li style="background-color:rgb(255, 255, 255);background-repeat:initial initial">

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">        when</div></li><li style="background-color:rgb(248, 248, 248);background-repeat:initial initial">

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">                fc : Car( ) from accumulate ( Car( b : brand)</div></li><li style="background-color:rgb(255, 255, 255);background-repeat:initial initial">


<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">                        init( Car c= new Car(); ),</div></li><li style="background-color:rgb(248, 248, 248);background-repeat:initial initial">


<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">                        action( c.brand = c.brand + b; ),</div></li><li style="background-color:rgb(255, 255, 255);background-repeat:initial initial">


<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">                        result( c )</div></li><li style="background-color:rgb(248, 248, 248);background-repeat:initial initial">

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">)</div></li><li style="background-color:rgb(255, 255, 255);background-repeat:initial initial">

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">        then</div></li><li style="background-color:rgb(248, 248, 248);background-repeat:initial initial">

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">                insert (fc);</div></li><li style="background-color:rgb(255, 255, 255);background-repeat:initial initial">

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">end</div><div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal"><br></div>

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal"><br></div></li></ol></span></div><div>The error is the same:</div><div><br></div><div><span style="font-family:monospace;font-size:11px;color:rgb(51, 51, 51)"><ol>


<li style="background-color:rgb(255, 255, 255);background-repeat:initial initial">

<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">Caused by: org.drools.RuntimeDroolsException: [Error: unable to access property (null parent): b]</div></li><li style="background-color:rgb(248, 248, 248);background-repeat:initial initial">


<div style="font-family:&#39;Courier New&#39;, Courier, monospace;font-weight:normal">[Near : {... Unknown ....}]</div></li></ol></span><div>A full stacktrace is available here: <a href="http://drools.pastebin.com/f1638db0e" target="_blank">http://drools.pastebin.com/f1638db0e</a></div>


<div><br></div><div><br></div><div>Best,</div><div><div></div><div class="h5"><br><div class="gmail_quote">On Tue, Jan 26, 2010 at 10:24 PM, Barry Kaplan <span dir="ltr">&lt;<a href="mailto:groups1@memelet.com" target="_blank">groups1@memelet.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>
Ok, I see from previous posts that we are having mvel issues. Cool.<br>
<font color="#888888">--<br>
View this message in context: <a href="http://n3.nabble.com/Problems-with-latests-5-1-SNAPSHOT-tp140043p140046.html" target="_blank">http://n3.nabble.com/Problems-with-latests-5-1-SNAPSHOT-tp140043p140046.html</a><br>
</font><div><div></div><div>Sent from the Drools - Dev mailing list archive at Nabble.com.<br>
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</div></div></blockquote></div><br><br clear="all"><br></div></div>-- <br>XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX<br><br>Esteban Aliverti<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Michael D Neale<br>home: <a href="http://www.michaelneale.net">www.michaelneale.net</a><br>blog: <a href="http://michaelneale.blogspot.com">michaelneale.blogspot.com</a><br>