[Click] Returning information in click

[Bow-Nan Cheng]

Hi,

I want to write an element that takes in some arguments, does some 
calculations based on that stuff, and then "return" say an "IP Address" to 
the .click file so that in the .click file, I want to do something like:

address :: MyElement(var1, var2) 

and "address" would have the ip address I want. How do I go about this? 
Thanks