X to the power Y function WEBI

I need to create one Variable in WEBI to calculate X to the power Y  (^ Caret)

In WEBI we already have SQRT function but what about X to the power Y or ^.

Any idea how to implement X to the power Y or ^.

In BW We have High Function (**) to calculate X to the power Y (2 to the ower 0.5) but what about WEBI