Qt for Python (PySide/Shiboken)

QML_IMPORT_NAME = "g1.backend.main" QML_IMPORT_MAJOR_VERSION = 1 @QmlElement @QmlSingleton class MySingleton(QObject): @Slot(result=str) def getFolder(self): return "c:\\" and in QML I'm trying this: Text { id: lblFolderLocation text: MySingleton.getFolder() } And the error is this now: file:///C:/Users/Francisco/Documents/G1_QML/qml/pages/newAnalysis.qml:88:17: Unable to assign [undefined] to QString