The above example shows you how to create `PieChart` using built-in Google Charts. In this example, for purpose of chart demonstration only, we do use mock-up data from array. As you can see, the KoolReport's widget in general support dataSource could be DataStore, Process, DataSource or even simple array.
For example:
...
"options" => array(
...
"pieSliceText" => 'label',
"slices" => [
4 => ["offset" => 0.2],
12 => ["offset" => 0.3],
14 => ["offset" => 0.4],
15 => ["offset" => 0.5],
]
)