GraphPie is an optional boolean variable used to indicate whether a pie graph could be created from the data provided. You cannot create a pie from a data set that has both positive and negative numbers as data elements. If you input both positive and negative data, GraphPie is set to false and no graph is drawn.

We recommend that you check this boolean variable just after the action statement that draws the pie (action GPie), and that you create alternatives for the user if the pie cannot be drawn.

Note: You can also manually label each wedge in a pie. See GPieLabels in Tick and Pie Wedge Labels.