I tried to search on web, but I couldn’t find that.
First, I will select some shapes, but I couldn’t find how to select.
I found ‘assemble’ method, this method to make group.
Please, tell me how to select some shapes, and grouping shapese.
I solved this issue.
It is bug for OmniGraffle.
I tried to use ‘hackRef’ method written on the page, I solved it !!
// ‘shapes’ are array of shape(graffle.Shape object).