app.versionName 无法获取当前软件版本号

toastLog(currentPackage())
toastLog(app.autojs.versionCode)
toastLog(app.autojs.versionName)
toastLog(app.versionCode)
toastLog(app.verionName)

16:12:50.535/D: com.tencent.mm
16:12:50.536/D: 658
16:12:50.536/D: 6.5.8
16:12:50.537/D: 658
16:12:50.537/D: undefined