Oh, they do breed readily in captivity. But there are two problems with that: People tend to ignore that they are not tripocal lizardas and that they need a special setup including lots of water and cold nights.
The second thing is that people twend to preferlarge, parasite infested attractive cheap wildcaught specimens over tiny healthy less cheap cb babies.
In the near future there will be a book available on their captive care and breeding by Esther Laue, who has great success with them since years.
Sadly this book will not be available in english.

Best regards

Ingo