How many movies have Renate Zeidler and Werner Ploner collaborated on?

They have worked on 2 movies together! Their first movie together was Himmel, Scheich und Wolkenbruch (1976) while their highest rated movie together was Monique, mein heißer Schoß (1978). They have not worked together since Monique, mein heißer Schoß (1978).