wiring of portlets


I would like to know, of how to do wiring of the portlets. I have done the sample of the Yahoo weather portlet, but I would like to know how the properties in that portlet were created ?

( Yahoo weather portlet has wiring properties - zipcodes ). Now i want to create a portlet with some properties, which can be mapped to some other portlet’s property.

Attached a snapshot of the required UI.

wiring is done over portlet preferences. You can create them in the Portlet Application Configuration window, which opens when you double click a portlet from the Solutions View.
One more thing (although you probably know that), the preference must not be hidden if you want to wire it.

best regards,