Tell them what you've got in you logbook. Now just make sure the experience you've got in your logbook is valid when you summit it to any aviation authority, including the one in your actual licence
Think I was clear. If you get your hours checked by your CAA and they certify your logbook, they are valid so you tell them what is in your logbook. You also CAN use FAA hours and include them in your EASA licence, however not all of them.