<?xml version="1.0"?> 
<param xml:id='mex_yy'> 
  <get> 
    <amdaParam name='mex_theta'/>
    <amdaParam name='mex_rsb'/>
  </get> 
  <process>$mex_rsb * sin($mex_theta)</process> 
  <output/> 
</param>