Expr()" ng-required="!$ctrl.getParam($index).can_be_empty && !$ctrl.getParam($index).optional" ng-model-options="{updateOn: 'blur'}">
    <input ng-if="arg.type === 'string'" class="form-control" ng-model="arg.value" placeholder="{{ $ctrl.getParam($index).label }}" ng-change="$ctrl.writeExpr()" ng-trim="false" ng-required="!$ctrl.getParam($index).can_be_empty && !$ctrl.getParam($index).optional" ng-model-options="{updateOn: 'blur'}">
    <span ng-if="arg.type === 'field'">
      <input class="form-control c