I don't completely understand what you are trying to do, but if you are trying to change an objects point of view either (1) just by editing that property it it's property list or (2) directly setting the value of that property using a method or function - I don't believe that can be done in Alice.
The only ways I know to directly set the point of view of an object is to either move the object to a point - the obvious way

- or to set it's point of view equal to either that of
another (real or dummy) object or to some objects previous point of view, which was
earlier saved as a variable.