D = ADDPROP(H,DynamicPropName) adds a dynamic property to the MATLAB 
objects in array H. DynamicPropName can be a string scalar or character 
vector.  The added property is associated only with the objects of H.  
There is no effect on the class of H.  ADDPROP returns a 
META.DYNAMICPROPERTY object, which can be modified to change property 
attributes or add property set and get methods.  
A dynamic property can be removed from an object by calling DELETE on
See also SWPREF, HANDLE, META.DYNAMICPROPERTY Help for swpref/addprop is inherited from superclass DYNAMICPROPS
Reference page in Doc Center
   doc swpref/addprop