Modify scripts with another script

[HippyCraig]

I was able to get the above to work, but I am having some difficualty finding any documentation on how to add and edit exisiting Parameters for a sub call.

Through the object model I want to search for a specific subcall which I am able to do. Now I want to modify and add some Parameters to the call and save it back out. I am not sure what properties or methodes to use to access these types.