All workflow variables (with a java.lang.String key) are passed to the beanshell environment. The script must set the variable with the name transition to the name of the transition that should be taken. Example:

      <decision name="only decision" >
           <delegation class="de.fs24.services.wfms.actionhandler.BeanShellDecisionHandler">
           <![CDATA[
            String transition;
            long time = System.currentTimeMillis();
            if (time % 2 == 0)
            {
                 transition = "left";
            }
            else
            {
               transition = "right";                 
          }
       \]\]\>
       </delegation>
       <transition name="left"   to="inside the left street" ></transition>
       <transition name="right"  to="inside the right street" ></transition>
      </decision>