def __init__(self,parent): QDialog.__init__(self) # Set up Ui from Designer self.ui = Ui_RibbedWingDialog() self.ui.setupUi(self) #Connect List self.ui.RibNumberSpin.valueChanged.connect(self.ValueChanged) self.ui.ThicknessSpin.valueChanged.connect(self.ValueChanged) self.NumberofRibs = 0 self.RibThickness = 0