Flash CS3 Professional.
RectangleObject.lockFlag
Read-only property; a Boolean value that determines whether different corners of the rectangle can have different radius values. If this value is true, all corners have the value assigned to RectangleObject.topLeftRadius. If it is false, each corner radius can be set independently.
To set this value, use document.setRectangleObjectProperty().
document.setRectangleObjectProperty(), RectangleObject.bottomLeftRadius, RectangleObject.bottomRightRadius, RectangleObject.topLeftRadius, RectangleObject.topRightRadius