How to pass parameter to "number of pair of points, time, voltage" parameters of cell "vpwl" inside a pcell?

Hi everyone,

I would like to add some features on Andrew's bussetp.il script, (the script is in this link: https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nX1lEAE&pageName=ArticleContent.).

(previous post: https://community.cadence.com/cadence_technology_forums/f/custom-ic-skill/65168/how-to-pass-parameters-to-sub-cells-parameter-in-pcell),

I want to add cell "vpwl" from analogLib into pcell "bussetp". Besides defining "vhi" and "vlo" as parameter "vdc" of "vpwl" as in previous post (https://community.cadence.com/cadence_technology_forums/f/custom-ic-skill/65168/how-to-pass-parameters-to-sub-cells-parameter-in-pcell), 

I try to pass parameter to "number of pairs of points", "time X" and "Voltage X" (X is determined by value of "number of pair"). With this feature, I can define the control signal waveform in transient sim, like power on sequence.

However, I encounter two issues as below

1) For cell "pwl" , the value of "Time" and "Voltage" are combined as a vector, passing to parameter "wave". How can I realize such combination?  

2)  As number of "Time" and "Voltage" pair is unknow until "number of pairs of points" is defined, how should I define pcell CDF so that it can adjust the number of inputs?

Could you please give me any idea or point me to some useful material?

Thanks and regards,

Yutao