(2.4.5)Is it normal that positions of collider cannot update at the collision callback?

Cocos Creator
1

For example, there is a Floor object with a collision callback:

cc.Class({
    extends: cc.Component,

    properties: {
        callback:null
    },

    onBeginContact: function (contact, selfCollider, otherCollider) {
        this.callback();
    }
});

which may collide with a falling ball. What I want to do is, when the ball touches the floor, the floor moves a bit lower so that it can collide with the ball again later:

cc.Class({
    extends: cc.Component,

    properties: {
        floorRigidBody:{
            type:require('Floor'),
            default:null
        }
    },

    onLoad(){
        cc.director.getPhysicsManager().enabled = true;
        this.floorRigidBody.callback=function(){
            this.floorRigidBody.node.y-=10;
        }.bind(this);
    }
});

But when the ball collides with the floor, the console message shows:

Error

which the error message seems comes from box2d, but it is normal if the floor is changed position from this.schedule:

this.scheduleOnce(function(){
    this.floorRigidBody.node.y-=10;
}.bind(this),3);

so, is it true that RigidBody doesn’t support modifying positions at the collision callback?

Cocos Creator version : 2.4.5