[Paraview] create DoubleVectorProperty in the gui. Update gui

[Felipe Bordeu]

Hi, I writing a reader and I will like to create a panel (in the object 
inspector) depending on the file information.

for example, adding (activating) a DoubleVectorProperty  with a custom 
name and a custom default value (depending of the information in the file).

A second question: I want to check the information that the user put 
into the panel, correct it and then put it back to the gui.
(How can I force paraview to update the gui with the information on the 
class?)

(until now I am compiling the reader as a plugins)

Thanks

Felipe