[Click] Help, about handler

[wubaochuan]

Hi all,
     I am using user level Click, and there is an element called 
*DirectIPLookup*, the element has a handler called *set*, how can I use 
this handler to add a route ?
     For example, a process called *foo* want to add a route to 
*DirectIPLookup, *how can *foo* communicate with Click process and the 
element *DirectIPLookup *in order to use* set *handler to add a route*?
*     Thank you.

yours
Chuan*
*