I'm trying to create a dropdown property for macros. I have managed to do this however I can't seem to access the config values to populate it. I was hoping to have a list of values in $scope.model.config.testValue1

angular.module("umbraco").controller("My.MacroDropDownController",
function ($scope) {

    if ($scope.model.config == null) {
        alert('still null!');
    }
    else {
        alert('HAS A VALUE!');
    }

});

Here is my manifest:

{
// you can define multiple editors
propertyEditors: [
    {
        alias: "My.MacroDropDown",
        name: "My macro dropdownr",
        icon: "icon-code",
        group: "Rich Content",

    isParameterEditor: true,

        editor: {
            view: "~/App_Plugins/MacroDropDown/macrodropdown.html"
        },

        prevalues: {
            fields: [
                {
                    label: "Test value 1",
                    description: "desc goes here",
                    key: "testValue1",
                    view: "multivalues"
                }
            ]
        }
    }
]
,
javascript: [
    '~/App_Plugins/MacroDropDown/macrodropdown.controller.js'
]

}

I've added them in the Data Types section and can see it in the database.

Any ideas why $scope.model.config is always null?