[rules-users] Rule to order by priority [Planner]

Hello there. I've been trying to create a rule to plan the my workorders with higher priority first, but I'm not bein able to. I tried creating a rule something like "conflictingLecturesInSamePeriod", but I'm getting lost. Example: I've implemented my previous example of engineer/workorders and added shitf and priority. The priorities goes from 1 to 5, the lowest it is, the more urgent it is (1-Highest, 2-High, etc..) I don't know how to compare it to the other in the list, so I tried checking with previous ID, but no success: ****************************** rule "workOrderByPriority" when $leftWorkOrderPriority : WorkOrder($leftWOP : id, $leftPriority : priority.priorityID) $righttWorkOrderPriority : WorkOrder(id >= $leftWOP, $rightPriority : priority.priorityID) $engineer: Engineer($id : id) then insertLogical(new IntConstraintOccurrence("workOrderByPriority", ConstraintType.NEGATIVE_SOFT, 1, <UNKNOWN>, $engineer)); end ******************************* this above is the second attempt, the <UNKNOWN> is because i'm lost about what to add and also if i should add something there. the first try just pass straight forward ******************************* rule "workOrderByPriority" when $engineer : Engineer($worktime : worktime) $priority : WorkOrder($priorityId : priority.priorityID) then insertLogical(new IntConstraintOccurrence("workOrderByPriority", ConstraintType.NEGATIVE_SOFT, 2, $priority, $engineer)); end ******************************* i know i'm far from get even closer. In order to define the planner according to priority I think I should compare it with entire list isn't? I noticed that in some rules, and entire list is pointed. I searched the guide and example for some tips, but the best I found was the course that compared 2 courses that I believe that will be the same thing i'll have to do with priorities.