United Kingdom, Sept. 10 -- Jon Cryer doesn't want to be part of Charlie Sheen's "cycle"

The Two And A Half Men star had some reservations about taking part in Netflix's new documentary about his former castmate, and he insisted he doesn't want to "build him up" or "tear him down".

Speaking in aka Charlie Sheen, Jon, 60, said: "I worked with Charlie Sheen for eight years. And if you wonder what it's like to work with Charlie Sheen for eight years, when I started, I had hair.

"I had some trepidation about participating in this, partially because part of the cycle of Charlie Sheen's life has been that he messes up terribly, he hits rock bottom, and then he gets things he gets things going again.

"And he brings a lot of positivity in his...