I have not understod how many copies of a card that is permitted. For example the two Jedi objectives in the Desolation of Hoth. If I include both in a deck, there will be four copies of Old Ben´s Spirit in my deck. Is this ok? I have read on the internet that only two copies of Old Ben´s Spirit are ok….

In the rulebook, it states that you may play only 2 of an objective. There are some objectives that further limit this by stating there may only be one in a deck. So it is okay to have two objective sets of the same name, regardless of how many of a particular card is contained therein. If you need some more convincing, take a look at corporate exploitation - it contains 5 of the same card for the command deck, but only one of these objectives may be included in the deck.

I see, thanks for the help. I have only looked at the Light Side cards so I had missed that obective