I am not certain on this but I think the answer is know since a line doesn't have an instance name. The only think i can think of off the top of my head would be to add an empty movieclip and add your line to the movieclip make sure you have a reference to that movieclip then if you had to delete the line you could delete the movieclip that contained the line.
Hope this helps.
Creating a movie that cracks my head, you have any idea ?
I am not sure that i follow your last post. Maybe if you elaborate on that I might be able to help you.
To create a button to delete this line.
I have a question related to this create movie clip.
I create another movie clip line_mc1 and another button for it. But I get only 1 movie clip. When I press for line_mc1, line_mc disappear.
To allow both movie clips appear, any idea?