this is like most problems with building macros. you cannot get the full function of the elements you add to it. same thing happens when building a tracker macro, or a multi layering macro. the functions are only available to themselves really. the only way to get them to work really is to rebuild the pixel analyzer completely inside of hte macro.
its hard to figure out, but i suggest getting the shake SDK and learn how this works. and on top of that, they will no longer be macros, but actual plugins.