Riddle if i get it i get a B for the rest of summer school lol?!

Riddle if i get it i get a B for the rest of summer school lol?

So there are two angels, one always lies and one always tells the truth. There are two doors one leading to heaven and one to hell. You want to go to heaven.... You can only ask one Question to the angels what do you ask them to go to heaven.
NOW... the question actually has to help you get to heaven because in class tosay everybody was like are you an angel..? well that doesnt help me figure out which door is the correct one soooooo...... anyone know???? the answer....

Would you be following your own rule of lying/truth if you said "This is the door to heaven?"

If the truthful one is in front of Heaven's door, he'll say "yes." (Because it IS the door to Heaven and saying so IS the truth. He WOULD be following his rule and will answer you "yes.")

If the liar is in front of the door to Heaven he'll also say "yes." The logic here is: If he said "this is the door to Heaven" that would be the truth. Therefore he would NOT be following his rule and the real answer to YOUR question is "no." But, since he has to lie, he'll say "yes."

The reverse also works. If the Truthful angel is in front of Hell's door, and said "this is the door to Heaven" he would be lying and NOT following his rule. He will tell so and answer "no."

If the liar is in front of Hell's door and said "this is the door to Heaven" it would be a lie. He WOULD be following his rule. But, since he has to lie, he will say "no."

The bottom line: It doesn't matter which one you ask, if he says "yes" go through his door. If he says "no" go through the other.

Confusing, I know, but it works.