"All credit to Dion he scored right in front of our supporters," Levein said after the 2-1 win at The Valley.
"He's been magnificent since he arrived at the club. He can play at the front, the back and I'm sure if I asked him he'd play midfield as well.
"I thought we played well at a place where it's extremely difficult to win.
"This was a big win for us in every way especially financially and winning is important but we also played very well. It was a great achievement to beat a Premiership side on their own ground.
"We played at a high tempo, showed a lot of energy and restricted Charlton from playing their game.