Although metal pans are a big no-no in microwave ovens, I have yet to see a combination oven that does not allow the use of metal when using the convection application. It is also true that each brand has different instructions.
It seems sad that someone would complicate things for the OP without knowing what brand the oven in question is. We are all here to share info, but shouldn't we try to make sure we have the info the OP is looking for before we jump in?
Just a thought.
Wine is the food that completes the meal.