Models and images brought into experiences from ThingWorx Repository don't appear in View

This is the code I'm using:

//************************************************************************************
//Sets the referenced image or model artifact by pulling it from ThingWorx
// ** params **
//  fileName - string - the name of the file that is being referenced
// fileFolder - string - one of three strings is passed - '/images/' || '/figures/'
// || '/models/' - which determines which folder in ThingWorx to look in and
// which Studio widget to set the source to
//************************************************************************************
$scope.setThingWorxFile = (fileName, fileFolder) => {

 let repositoryPath = '/Thingworx/FileRepositories/TutorialExperiences.Repository/';
 let filePath = repositoryPath + $scope.ThingWorxTableName + fileFolder;
 let fullFilePath = filePath + fileName;

 switch (fileFolder) {
 case '/images/':
 $scope.view.wdg['InfoImage'].src=fullFilePath;
 break;
 case '/figures/':
 $scope.view.wdg['model-1']['sequence'] = fullFilePath;
 break;
 case '/models/':
 $scope.view.wdg['model-1'].src=fullFilePath;
 break;
 }
}

I'm not using any External Data entries for this as I was told using the specific links was good enough. Am I wrong?