[rules-users] Using mvel in RHS with Java code

[wilsonywx]

I am trying to use mvel for RHS but Drools gives me BuildError : Unable to
build expression for 'consequence' : null 'i = Util.test();'

The error goes away when I remove the "dialect 'mvel'" line, so the error
must have something to do with using mvel. I think I am missing something
here, but the documentation on MVEL in Drools is really scanty. 

Code:

import java.util.*;
import a.b.Util;


rule "Test"
	dialect "mvel"
	when
		eval(true)
	then
		Util.test();		
end
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