Games : Killing all entities except players and armor stands [duplicate]

This question already has an answer here:

• How do I select two types of entities in Minecraft with the type selector? 1 answer

Is there a way to kill every entity except players and armor stands? I've tried with

/kill @e[type=!Player,!ArmorStand]

and

/kill @e[type=!Player;!ArmorStand]

But it doesn't work. How can I do that?