The idea is to use the methods SelectedFolders to get an initialized folders collection. There is no way you can create a folders collection from a script and just stuff arbitrary folders in to make up some sort of initial selection. If the available methods are not sufficient, you can only start with an empty selection. As always, if you want changes or addition, add a feature request. I don't plan to make changes to scripting soon, though. Especially since I already added several new methods for the next release, some for your purposes I think. So now I will concentrate on other things.