Save Analysis and creating Parameter

Hello,

i have a question with the weldseam from creo. I use Creo 2.0 and my model have been welded. I would like to knowthe length of the whole weldseam (schweißnaht), like the sum of all it. I acctually want to save the length all the edges that have been welded and then as someone suggested me, create a parameter from the analysis feature.  My question is, how can I save an analysis value? and how do I create a parameter?

Thanks a lot.

Best regards,

Edna