picker选项不正常显示

使用picker把这个数组放进选择器后,选择和表面显示都是正常的,但是点开之后的选项是三个[object Object]

<picker bindchange="bindgoodChange" value="{{value}}" range="{{region}}" mode="selector">

                        <view class="picker">

                            当前选择：{{region[value].name}}

                        </view>

                    </picker>