By the way, Rav Moshe Paskens that since everyone means “God” when they say “Hashem” that if you say “Hashem” in the context of a Bracha it’s like you said Shem Shamayim. This is against a very large number of the earlier Poskim though (he acknowledges that; he’s disagreeing with an Eitzah to say “Hashem” instead of AD– in a case of Safek Brachos).
I find it very hard to believe that someone said to say it in Hebrew without understanding rather than English and understand it. We Pasken that a little bit with Kavanah is better than a lot without.