diff --git a/numass-main/src/main/java/hep/dataforge/plotfit/PlotFitResultAction.java b/numass-main/src/main/java/hep/dataforge/plotfit/PlotFitResultAction.java
index bf59a4e2..fd229f55 100644
--- a/numass-main/src/main/java/hep/dataforge/plotfit/PlotFitResultAction.java
+++ b/numass-main/src/main/java/hep/dataforge/plotfit/PlotFitResultAction.java
@@ -25,6 +25,7 @@ import hep.dataforge.description.ValueDef;
 import hep.dataforge.exceptions.ContentException;
 import hep.dataforge.io.reports.Reportable;
 import hep.dataforge.meta.Laminate;
+import hep.dataforge.meta.Meta;
 import hep.dataforge.plots.PlotsPlugin;
 import hep.dataforge.plots.XYPlotFrame;
 import hep.dataforge.plots.data.PlottableData;
@@ -43,7 +44,7 @@ import org.apache.commons.math3.analysis.UnivariateFunction;
 public class PlotFitResultAction extends OneToOneAction<FitState, FitState> {
 
     @Override
-    protected FitState execute(Context context,Reportable log, String name, Laminate metaData, FitState input) {
+    protected FitState execute(Context context, Reportable log, String name, Laminate metaData, FitState input) {
 
         PointSource data = input.getDataSet();
         if (!(input.getModel() instanceof XYModel)) {
@@ -65,30 +66,7 @@ public class PlotFitResultAction extends OneToOneAction<FitState, FitState> {
 
         XYPlotFrame frame = (XYPlotFrame) PlotsPlugin
                 .buildFrom(context).buildPlotFrame(getName(), name,
-                metaData.getNode("plot", null));
-        //JFreeChartFrame.drawFrame(reader.getString("plotTitle", "Fit result plot for "+input.getName()), null);
-
-//        double[] x = new double[data.size()];
-//        double[] y = new double[data.size()];
-//        double xMin = Double.POSITIVE_INFINITY;
-//
-//        double xMax = Double.NEGATIVE_INFINITY;
-//
-//        List<DataPoint> points = new ArrayList<>();
-//
-//        for (int i = 0; i < data.size(); i++) {
-//            x[i] = adapter.getX(data.get(i)).doubleValue();
-////            y[i] = adapter.getY(data.get(i)); 
-//
-//            points.add(adapter.mapToDefault(data.get(i)));
-//            if (x[i] < xMin) {
-//                xMin = x[i];
-//            }
-//
-//            if (x[i] > xMax) {
-//                xMax = x[i];
-//            }
-//        }
+                metaData.getNode("plot", Meta.empty()));
         frame.add(new PlottableFunction("fit", function, data, adapter));//FIXME replace by helper
 
         frame.add(PlottableData.plot("data", adapter, data));
diff --git a/numass-main/src/main/java/inr/numass/NumassPlugin.java b/numass-main/src/main/java/inr/numass/NumassPlugin.java
index d235783f..74cf70b9 100644
--- a/numass-main/src/main/java/inr/numass/NumassPlugin.java
+++ b/numass-main/src/main/java/inr/numass/NumassPlugin.java
@@ -27,7 +27,6 @@ import hep.dataforge.datafitter.models.XYModel;
 import hep.dataforge.meta.Meta;
 import hep.dataforge.plotfit.PlotFitResultAction;
 import hep.dataforge.plots.PlotDataAction;
-import hep.dataforge.storage.commons.StorageManager;
 import hep.dataforge.tables.PointAdapter;
 import hep.dataforge.tables.XYAdapter;
 import inr.numass.actions.AdjustErrorsAction;
@@ -204,6 +203,21 @@ public class NumassPlugin extends BasicPlugin {
             return res;
         });
 
+        manager.addModel("sterile-polina", (context, an) -> {
+            double A = an.getDouble("resolution", 8.3e-5);//8.3e-5
+            double from = an.getDouble("from", 13900d);
+            double to = an.getDouble("to", 18700d);
+            BivariateFunction resolutionTail = ResolutionFunction.getRealTail();
+            RangedNamedSetSpectrum beta = new BetaSpectrum(context.io().getFile("FS.txt"));
+            ModularSpectrum sp = new ModularSpectrum(beta, new ResolutionFunction(A, resolutionTail), from, to);
+            if (!an.getBoolean("caching", false)) {
+                sp.setCaching(false);
+            }
+            NBkgSpectrum spectrum = new NBkgSpectrum(sp);
+
+            return new XYModel("tritium", spectrum, getAdapter(an));
+        });
+
         manager.addModel("modularbeta-unadeabatic", (context, an) -> {
             double A = an.getDouble("resolution", 8.3e-5);//8.3e-5
             double from = an.getDouble("from", 14400d);
diff --git a/numass-main/src/main/java/inr/numass/workbench/NumassWorkbenchController.java b/numass-main/src/main/java/inr/numass/workbench/NumassWorkbenchController.java
index c15cc9d4..be5582f2 100644
--- a/numass-main/src/main/java/inr/numass/workbench/NumassWorkbenchController.java
+++ b/numass-main/src/main/java/inr/numass/workbench/NumassWorkbenchController.java
@@ -54,7 +54,6 @@ import javafx.scene.control.Alert;
 import javafx.scene.control.Button;
 import javafx.scene.control.Tab;
 import javafx.scene.control.TabPane;
-import javafx.scene.control.TextArea;
 import javafx.scene.control.TitledPane;
 import javafx.scene.control.ToggleButton;
 import javafx.stage.FileChooser;
@@ -324,7 +323,7 @@ public class NumassWorkbenchController implements Initializable, StagePaneHolder
             } catch (Exception ex) {
                 GlobalContext.instance().getLogger().error("Exception while executing action chain", ex);
                 Platform.runLater(() -> {
-//                    ex.printStackTrace();
+                    ex.printStackTrace();
                     statusBar.setText("Execution failed");
                     Alert alert = new Alert(Alert.AlertType.ERROR);
                     alert.setTitle("Exception!");