javascript - Setting Value for Dynamic ngModel inside ngRepeat -

how set value of dynamically created ng-model inside of ng-repeat?

i'm trying set each dynamic ng-model true or false

html file

<md-list-item ng-repeat="awayteamplayer in ulineup.awayteamplayerslineup ">     <md-checkbox ng-model="ulineup.awayteamplayersplayed[awayteamplayer.player]"></md-checkbox>     {{awayteamplayer.player}} </md-list-item> 

controller file

(function() {      angular         .module('app')         .controller('updatelineupcontroller',                     ['$routeparams', '$firebasearray', 'firebase_url',                     function($routeparams, $firebasearray, firebase_url) {              var vm = this;             var gameid = $routeparams.gameid;             var lineupid = $routeparams.lineupid;             var awayteamplayerslineupref = new firebase(firebase_url + 'games/' + gameid + '/lineup/' + lineupid + '/awayteamplayerslineup');             vm.awayteamplayerslineup = $firebasearray(awayteamplayerslineupref);              // tried following doesn't work             angular.foreach(vm.awayteamplayerslineup, function(value, key) {                 if(value.played === true) {                     // trying set ng-model value true gives me following error                     // typeerror: cannot set property 'mark' of undefined                     vm.awayteamplayersplayed[value.player] = true;                 } else {                     vm.awayteamplayersplayed[value.player] = false;                 }             });          }]);  })(); 

here try using init create property in memory.

<md-list-item ng-repeat="awayteamplayer in ulineup.awayteamplayerslineup "> <md-checkbox ng-init="dynamicprop = 'whatever'" ng-model="ulineup.awayteamplayersplayed[awayteamplayer.player]"></md-checkbox> {{awayteamplayer.player}} </md-list-item>