intelligentGroup/unpackage/dist/dev/mp-weixin/uni_modules/pick-regions/pick-regions.wxml

<picker mode="multiSelector" value="{{multiIndex}}" range="{{multiArray}}" data-event-opts="{{[['change',[['handleValueChange',['$event']]]],['columnchange',[['handleColumnChange',['$event']]]]]}}" bindchange="__e" bindcolumnchange="__e"><slot></slot></picker>