public BubbleValue setTarget(float targetX, float targetY, float targetZ) {
        set(x, y, z);
        this.diffX = targetX - originX;
        this.diffY = targetY - originY;
        this.diffZ = targetZ - originZ;
        return this;
    }
Set target values that should be reached when data animation finish then call {@link Chart#startDataAnimation()}
hellocharts-library/src/lecho/lib/hellocharts/model/BubbleValue.java