diff --git a/src/gui_qt/dsc/glass_dialog.py b/src/gui_qt/dsc/glass_dialog.py
index 34e65fd..6956e8a 100644
--- a/src/gui_qt/dsc/glass_dialog.py
+++ b/src/gui_qt/dsc/glass_dialog.py
@@ -1,6 +1,8 @@
-from gui_qt.Qt import QtWidgets, QtCore
-from gui_qt._py.tnmh_dialog import Ui_Dialog
-from gui_qt.lib.pg_objects import PlotItem
+from ..Qt import QtWidgets, QtCore
+from .._py.tnmh_dialog import Ui_Dialog
+from ..lib.pg_objects import PlotItem, RegionItem
+
+from nmreval.data import DSC
 
 
 class TgCalculator(QtWidgets.QDialog, Ui_Dialog):
@@ -12,6 +14,12 @@ class TgCalculator(QtWidgets.QDialog, Ui_Dialog):
 
         self._plots = {}
 
+        self.limits = RegionItem(), RegionItem()
+        for lim in self.limits:
+            self.graphicsView.addItem(lim)
+
+        self.add_sets()
+
     def __call__(self):
         self.clear()
         self.add_sets()
@@ -25,17 +33,11 @@ class TgCalculator(QtWidgets.QDialog, Ui_Dialog):
     def add_sets(self):
         for key, name in self._management.active_sets:
             data = self._management.data[key]
+            if not isinstance(data.data, DSC):
+                continue
 
             item = QtWidgets.QListWidgetItem(name)
             item.setData(QtCore.Qt.UserRole, key)
             plot = PlotItem(x=data.x, y=data.y)
             self.graphicsView.addItem(plot)
             self._plots[key] = plot
-
-
-if __name__ == '__main__':
-    app = QtWidgets.QApplication([])
-    w = TgCalculator(None)
-    w.show()
-    app.exec()
-
diff --git a/src/resources/_ui/tnmh_dialog.ui b/src/resources/_ui/tnmh_dialog.ui
index ffb3ea3..7b3787a 100644
--- a/src/resources/_ui/tnmh_dialog.ui
+++ b/src/resources/_ui/tnmh_dialog.ui
@@ -94,6 +94,16 @@
        </property>
       </widget>
      </item>
+     <item row="4" column="0" colspan="2">
+      <widget class="QPushButton" name="pushButton">
+       <property name="text">
+        <string>PushButton</string>
+       </property>
+      </widget>
+     </item>
+     <item row="5" column="0" colspan="2">
+      <widget class="QListWidget" name="listWidget_2"/>
+     </item>
     </layout>
    </item>
    <item row="1" column="3">