<div>Hello,</div>
<div>&nbsp;</div>
<div>When using the following two rules with an empty working memory both rules get fired:</div>
<div>&nbsp;</div>
<div>===================================</div>
<div>rule rule1<br>when&nbsp;&nbsp;&nbsp;&nbsp; <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; not Person(gender == Consts.Unknown)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br>then<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.out.println(&quot;rule1&quot;);<br>end</div>
<div>
<p>rule rule2<br>when<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; exists Person(gender == Consts.Unknown)<br>then<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.out.println(&quot;rule2&quot;);<br>end<br>===================================</p></div>
<div>.</div>
<div>Can anyone help me with this?</div>
<div>&nbsp;</div>
<div>Thanks</div>