executing code from a custom attribute
I have added Custom Attributes to a Camera. One of the attributes is a dropdown box containing a list of prime lenses. ie(50mm f1.8, 100mm f2 etc). What I cant figure out is how you can code this so that when you select one of the the options from the list then it automatically changes the value on the camera. I also want to add zoom lenses so that it will allow you to adjust the value manually between a set range.
Any help would be gratfully recieved.