United Kingdom, June 20 -- Pierce Brosnan gave his sons "very little advice" as they worked together on the new movie The Unholy Trinity.

The 72-year-old star is joined by his youngest boys Dylan, 28, and Paris, 24, - who he has with his wife Keely Shaye Smith - in the film and explained that he didn't want to overload the pair on their acting bows in the Western action flick.

Pierce told People magazine: "I gave very little advice, and they asked me for very little advice. I think both men knew instinctively what to do: Show up on time, know your lines, and be brilliant. Be relaxed, and have fun, and go play."

However, the former James Bond actor was less impressed by how untidy his sons were in the motor home they shared during the s...