How many movies have Helen Perzon and Knut Bohwim collaborated on?

They have worked on 2 movies together! Their first movie together was The Olsen Gang and Data-Harry Blows Up The World Bank (1978) while their highest rated movie together was The Olsen Gang and Dynamite-Harry Towards New Heights (1979). They have not worked together since The Olsen Gang and Dynamite-Harry Towards New Heights (1979).