In this use case, you get the subtasks from an item and then
        automatically update fields in the subtasks when those fields are changed in
        the principal item. 
        
 
 
      The orchestration workflow loops through each subtask and processes it
        as follows: 
      
 
        - Gets the principal item, including its subtasks. 
        
 
 
        - Stores the first subtask in a working data variable. 
        
 
 
        - Updates the 
          Regression and 
          Info fields in the subtask with information in the extended
          field list. The values in the extended field list are mapped to the associated
          values in the principal item. 
        
 
 
        - Repeats step 2 and step 3 for each remaining subtask. 
        
 
 
      
 
 
      To update subtask values based on principal item
        values: