how get net name of shape which is drawn by a skill code

Hi All,

I'm working on one skill code.  At one point of program, ---> skill code will draw a rectangle over the pcell pin, then once the layout is refreshed that net will get a net name(since layout is in XL mode). 

Here I need a skill function to refresh the connectivity of shape(which is drawn by skill code) and need net name of shape for further processing in skill code.

Thank you,

Narendra K