Collision Problem?

Hello everyone,

I will explain the problem by simplifying it. There are 2 objects of type A and B. What I want to do is: object A collides with object B, but object B doesn’t collide with object A (So, object B can move around the world like there is no object A, but if collides with object A then physics works for object A). I made the settings as shown below, but it didn’t work. Two objects don’t collide each other.