Newton2 Questions?

I have a couple questions about Newton2, I'm hoping someone can help me.

1. Do you have to invert the track for an inverted coaster, or will it still work the same way without doing this?

2. How do you make an inverted style 0-g roll? It seems harder than doing a regular standard roll.

Any tips and help is much appreciated.

1. You set the heartline value to a negative number (e.g., -1.1 meters);
2. Just like a standard zero-g roll--same basic procedure as found here.

That would make sense, Thanks Entropy!