I've produced several thousand red-eyes. It's not hard to do, but they're picky about conditions before they breed. You have to cycle them through rainy season, dry season and back to rain. And as has been stated, females want to pick their mates, so you need at least 2 males for her to pick from.
Fantasy Frogs is a good webpage to check out. Go to the "Leaf Frog Life Cycle" link to see the breeding pictures.