In polygraph,Is it possible to generate specific range of object sizes?

Hello All,

I am running polygraph test using the workload webaxe4.pg. Is it possible to
generate specific range of object sizes say (200KB to 300KB) instead  of the
default ones which starts from 1KB. Also is it possible to capture and store
the generated objects for analysis.

Relevant part of my contents.pg file is given below.  Kindly help me to
achieve this.

Content cntImage = {
        kind = "image";
        mime = { type = undef(); extensions = [ ".gif", ".jpeg", ".png" ];
};
        obj_life_cycle = olcImage;
        size = exp(100KB);
        cachable = 80%;
        checksum = 1%;
};
Content cntHTML = {
        kind = "HTML";
        mime = { type = undef(); extensions = [ ".html" : 60%, ".htm" ];
};
        obj_life_cycle = olcHTML;
        size = exp(500KB);
        cachable = 90%;
        checksum = 1%;

        may_contain = [ cntImage ];
        embedded_obj_cnt = zipf(13);
};


Thanks,
--jas