Creating variables
          This task is optional. If you choose, you can instead use the existing global variables gv_Time2, gv_Measure2, and gv_Region2
         
         - Select the Accessories pane of the Application Explorer.
 - Right-click Global Variables and select .
 - Specify a name for a variable to hold an element of the Period hierarchy.
 - Repeat steps 2 to 3 and create global variables to hold elements of the Measure and Region hierarchies.