Controlling Chart Facts with if...else

The JavaScript script for DropDown1, Plan and Actual section of Sample2mod.bqy is:
var choice=ActiveDocument.Sections["Plan and Actual"].Shapes.DropDown1[DropDown1.SelectedIndex];

if (choice=='Planned vs. Actual')
{
ActiveDocument.Sections["PlanActualCostsChart"].Facts.RemoveAll();
ActiveDocument.Sections["PlanActualCostsChart"].Facts.Add('Costs Plan');
ActiveDocument.Sections["PlanActualCostsChart"].Facts.Add('Costs Actual');

ActiveDocument.Sections["PlanActualSoldChart"].Facts.RemoveAll();
ActiveDocument.Sections["PlanActualSoldChart"].Facts.Add('Units Sold Plan');
ActiveDocument.Sections["PlanActualSoldChart"].Facts.Add('Units Sold Actual');

ActiveDocument.Sections["PlanActualRevenueChart"].Facts.RemoveAll();
ActiveDocument.Sections["PlanActualRevenueChart"].Facts.Add('Revenue Plan');
ActiveDocument.Sections["PlanActualRevenueChart"].Facts.Add('Revenue Actual');
}
else
if (choice=='Planned')
{
ActiveDocument.Sections["PlanActualCostsChart"].Facts.RemoveAll();
ActiveDocument.Sections["PlanActualCostsChart"].Facts.Add('Costs Plan');
ActiveDocument.Sections["PlanActualSoldChart"].Facts.RemoveAll();
ActiveDocument.Sections["PlanActualSoldChart"].Facts.Add('Units Sold Plan');
ActiveDocument.Sections["PlanActualRevenueChart"].Facts.RemoveAll();
ActiveDocument.Sections["PlanActualRevenueChart"].Facts.Add('Revenue Plan');
}
else
if (choice=='Actual')
{
ActiveDocument.Sections["PlanActualCostsChart"].Facts.RemoveAll();
ActiveDocument.Sections["PlanActualCostsChart"].Facts.Add('Costs Actual');
ActiveDocument.Sections["PlanActualSoldChart"].Facts.RemoveAll();
ActiveDocument.Sections["PlanActualSoldChart"].Facts.Add('Units Sold Actual');
ActiveDocument.Sections["PlanActualRevenueChart"].Facts.RemoveAll();
ActiveDocument.Sections["PlanActualRevenueChart"].Facts.Add('Revenue Actual');
}