Multiple expressions define in one ExpressionFilter?

[Tech Newbie]

Is it possible to define multiple expressions in one single ExpressionFilter?  
For example, I want to filter out two different texts in two different classes 
but this doesn't work.  Only the 2nd definition takes effect.

<filter class="org.apache.log4j.filter.ExpressionFilter">
  <param name="Expression" value="LOGGER ~= class1 &amp;&amp; MSG ~= test1"/>
  <param name="Expression" value="LOGGER ~= class2 &amp;&amp; MSG ~= test2"/>
  <param name="AcceptOnMatch" value="false"/>
</filter>

I have to separate them out in their individual <filter> element.