def METHOD_NAME(self):
    matNum = int(self.matCombo.get().split(':')[0])
    matNam = self.matCombo.get().split(':')[1].strip()
    isExternal = self.ctbValue.get() == _('EXTERNAL')
    kerfWidth = self.materials[matNum]['kerf_width']
    error = GUSSET.METHOD_NAME(self, self.fTmp, self.fNgc, self.fNgcBkp, \
            matNum, matNam, \
            self.preAmble, self.postAmble, \
            self.liValue.get(), self.loValue.get(), \
            self.xsValue.get(), self.ysValue.get(), \
            kerfWidth, isExternal, \
            self.wValue.get(), self.hValue.get(), self.aValue.get(), \
            self.rValue.get(), self.rbValue.get())
    if error:
        self.dialog_show_ok(_('Gusset Error'), error)
    else:
        self.fileOpener(self.fNgc, True, False)
        self.addC['state'] = 'normal'
        self.undoC['state'] = 'normal'
        self.preview_button_pressed(True)