def METHOD_NAME(self):
    "fills the widgets"
    index_crosssectiontype = self.parameterWidget.cb_crosssectiontype.findText(
        self.SectionType
    )
    self.parameterWidget.cb_crosssectiontype.setCurrentIndex(index_crosssectiontype)
    self.parameterWidget.if_rec_height.setText(self.RectHeight.UserString)
    self.parameterWidget.if_rec_width.setText(self.RectWidth.UserString)
    self.parameterWidget.if_circ_diameter.setText(self.CircDiameter.UserString)
    self.parameterWidget.if_pipe_diameter.setText(self.PipeDiameter.UserString)
    self.parameterWidget.if_pipe_thickness.setText(self.PipeThickness.UserString)