set region flag correctly

src/gui_qt/io/fcbatchreader.py

@@ -72,7 +72,7 @@ class QFCReader(QtWidgets.QDialog, Ui_FCEval_dialog):
         self.close()
 
     def read(self, items):
-        region = (None, None)
+        region = None
         if self.region_box.isChecked():
             start = None
             if self.start_lineedit.text():