No. Of course not.
You have to untighten the screw of the neagtive battery terminal clamp. Now disconnect the negative battery terminal clamp from the negative battery terminal itself. Now put the ampere meter between the neagtive battery terminal clamp and the negative battery terminal itself. Now you see the current. When you now lock the car and wait a few minutes you should see the current is going down (more and more) because the control devices of the car are going in standby.