How to Denote Swept Design Variables in Calculator

 Hi all,

      I have been in quandaries in denoting the swept design variables in calculator for quite a long time. If anyone could help me out, that would be a lot of thanks.

     See, currently I am sweeping both Length (L) and Width (W) of a transistor simultaneously, L in parametric analysis and W in DC design variable sweep, to get the dependence of gm/Id on Id/W while W and L are both varying. Thus I have used some expressions to retrieve the variables.

    Well, the results of gm and Id seem quite correct by uses of  functions, say, OS("/M0" "gm") and getData("/M0/D" ?result"dc"); but the results of W and L are not even close.For instance, I got such expressions from Result Browser,

                        pv("top_level" "W" ? result "designParamVals") OR pv("/W" "value" ?result "variables") 

which, if plotted out, would only get me one single horizontal line with L as x-axis. It seems like the pv() function would only retrieve the fixed width defined in the "design variables" list in ADE-L, and the L in parametric analysis, but I was expecting to get a cluster of curves where W and L are both varying. Or, in this case, there should be several horizontal lines  with L as x-axis.

   So can anyone tell me how to do it correctly? By the way, I am using IC6.1.6-64b.500.13.2 and spectre 15.1.0.345.isr2.

Thanks a lot,

Marco