No, that is incorrect; because one has equivocated upon inability. Inability in one sense is that of being able to go against illogical necessities, such as making a round square. However, when one says that God is omnipotent, one is not saying that He can make a square round because if He could make logical illogical and illogic logical, then He could be real and not real at the same time. The sense that Christians say of God is in a different sense. He cannot go against His own character, which is that of omnipotent, which is illogical. Therefore, the question has equivocated upon inability and is an illogical and irrational question. It could be compared to "Have you stopped beating your mother?" in one sense.