output.value=input.value;
output.label=input.label;

var ci=new GlideRecord('cmdb_ci');

if(direction=='inbound'){
   if(ci.get('correlation_id',input.value)){
      output.value=ci.sys_id+";
      output.label=ci.getDisplayValue();
      }
}
if (direction=='outbound'){
  if(ci.get(input.value)){
     if(ci.correlation_id){
        output.value=ci.correlation_id+";
        output.label=input.label;
       }
    }
}