Multilevel array display in ion-radio

Hi all

I trying to display the languages based on the region you chose. This is the array:

$scope.regionlanguage = [
            {
                text: "America",
                value: "se",
                languages: [
                {
                    text: "english",
                    value: "en"
                },
                {
                    text: "nederlands",
                    value: "nl"
                }
                ]
            },
            {
                text: "Belgium",
                value: "be",
                languages: [
                {
                    text: "english",
                    value: "en"
                },
                {
                    text: "nederlands",
                    value: "nl"
                }
                ]
            }
        ];

I want to make a view that when I click on the region America I het al those languages. The Ionic app i’m making is multi language.

In my controller now i have this But I don’t know how to get the languages of the region i clicked on.

$scope.regionlanguage = [
                {
                    text: "Sweden",
                    value: "se",
                    languages: [
                    {
                        text: "english",
                        value: "en"
                    },
                    {
                        text: "nederlands",
                        value: "nl"
                    }
                    ]
                },
                {
                    text: "Vlaanderen",
                    value: "be",
                    languages: [
                    {
                        text: "english",
                        value: "en"
                    },
                    {
                        text: "nederlands",
                        value: "nl"
                    }
                    ]
                }
            ];

            $scope.data = {selectedRegion: "se"};
            $scope.data = {selectedlanguages:"nl"};

            $scope.languagename = [];
            // get languages names by region
            $scope.getlanguages = function(region, language) {
                
                Settings.set("region", $scope.data.selectedRegion);    
            }

Can someone help me with this? I’m trying to display this in ion-radio items

Thanks in advance