hi

I tried that in the past m they say you need to pass a parameter of the lines you want to delete separated by ";"

that did not worked as once a line is deleted the other lines get a different line#.

I usually store the lines I need to delete (not the lines but something else that will help me find on which line it is) 
and then delete one line and reread the object and delete the next etc.. in a loop.

not nice at all...