function setPoint( 
   index : number(Integer),
   point : Point
) : (Any);

var resultVar = instanceOfPointCollection.setPoint(number(Integer),Point);

Parameters

index

The zero-based index of the point to change.

point

The new value to assign to the specified point.

This function changes the value of a point to a copy of the specified point. This function will not add a new point to the collection; the collection must contain an point at the given index before you call this function.

If the new value is different from the original value, this function will raise the pointChanged event.

Reference