Find bounding box and dynamically change it

[MikeTheMater]

I am using webots simulator and i want to calculate and add the bounding box of the mavic2pro robot (the whole drone and not just the parts of it). I managed to add to the proto file as a bounding object one box but it isn't the right size because i found the dimension with trial and error on how it seemed right.
So the first thing i need is to access the points of the drone in order to find the correct bounding box.
The second thing i want to do is to find a way to dynamically change the size of the bounding based on the speed of the drone. I know i can have the speed vector, i just don't know how to access and change the box size from the controller.
The language i write is python.
Lots of thanks in advance

[MikeTheMater]

I don't know if it is the optimal way to do it but i found a way. I created a supervisor controller and changing the box through that in every step. I gain access to the box from these functions
self.bounding_object = self.mavic.getField("boundingObject").getSFNode()
self.children_field = self.bounding_object.getField("children")
self.first_pose_node = self.children_field.getMFNode(0) #or whatever the index you want is
self.pose_children_field = self.first_pose_node.getField("children")
self.bounding_box = self.pose_children_field.getMFNode(0)
self.size_field = self.bounding_box.getField("size")
and i give new values each time from the self.size_field.setSFVec3f(YOUR_NEW_SIZE).