Hi, all,<br><br>What are we supposed to do if Int64_Box does not support the not_equal constraints?  <br><br>Int64_Box.add_constrain(x!-=0) does not work for me. PPL gives me:  <br>terminate called after throwing an instance of &#39;std::runtime_error&#39;<br>
  what():  PPL Java interface internal error<br><br>I think this error is expected. What would be the work-around then ? (except putting x!=0 to ((x&gt;=1) or (x&lt;=-1)) )<br><br>Thanks. <br>Zell.<br><br>