In that case, the right question would be "Are you a state contracting to ICAO, and have you filed a difference against ICAO Annex I, para 1.2.1". If the answer is "Yes, we are and No, we have not" then you're good to go.
But I'm getting the feeling that for these sorts of discussions, particularly if you're getting ramp checked, there should be an ICAO "Language Proficiency in Legalese" before you're allowed to participate.