"I was very conscious of not 'letting the side down' because New Zealand aid workers are so highly regarded and have reputations for being able to do things like build generators out of old washing machines - can do anything with a piece of No 8 fencing wire."
Askew and Byamana were introduced by a fellow Kiwi aid worker, Chris Ives, who asked Askew to keep an eye out for the young Rwandan.
"He was naturally gregarious and I thought if anyone was going to make something of themselves and the opportunity for a new start, it would be him," says Askew. "I am thrilled he is getting the chance to talk about his experiences and share his story.
"It's a different world in Africa and I hope that comes through along with a sense of the emotions one feels when there. I think New Zealanders should feel hugely proud that this is a great country where we can be generous about letting people come here and have a second chance."
Byamana says he wanted to pay tribute to Bob Askew to show what a "determined man" can achieve.
Askew, now an NZ Red Cross area council member, has been renamed Nick in A Thousand Hills and is portrayed by Andrew Grainger. While writer Mike Hudson and director Margaret-Mary Hollins have met and talked with Askew, Grainger says he has delayed contacting him so he could develop his own performance.
"But now there are things I need to discuss and double check so hopefully we'll be talking soon."