| position | The new scroll position. Integer. | 
                        
                        
                           
                           | direction | The direction of motion: ScrollEventDirection.VERTICAL or ScrollEventDirection.HORIZONTAL. FlexScrollDirection. | 
                        
                        
                           
                           | detail | Provides the details of the scroll activity. For most scroll activities the value is one of the listed constants, such as
                              THUMB_TRACK. If the event indicates that the scrollbar has moved up, down, left, or right, the value is the string concatenation
                              of the amount of motion (such as "Line" or "Page") and the constant that indicates the direction, such as LEFT. FlexScrollDetail. |