diff --git a/src/Mod/Fem/Gui/TaskPostBoxes.cpp b/src/Mod/Fem/Gui/TaskPostBoxes.cpp
index d2c90f752f..d289db10c7 100644
--- a/src/Mod/Fem/Gui/TaskPostBoxes.cpp
+++ b/src/Mod/Fem/Gui/TaskPostBoxes.cpp
@@ -352,6 +352,12 @@ TaskPostDisplay::TaskPostDisplay(Gui::ViewProviderDocumentObject* view, QWidget
     updateEnumerationList(getTypedView<ViewProviderFemPostObject>()->DisplayMode, ui->Representation);
     updateEnumerationList(getTypedView<ViewProviderFemPostObject>()->Field, ui->Field);
     updateEnumerationList(getTypedView<ViewProviderFemPostObject>()->VectorMode, ui->VectorMode);
+
+    // get Tranparency from ViewProvider
+    int trans = getTypedView<ViewProviderFemPostObject>()->Transperency.getValue();
+    Base::Console().Log("Transparency %i: \n", trans);
+    // sync the trancparency slider
+    ui->Transparency->setValue(trans);
 }
 
 TaskPostDisplay::~TaskPostDisplay()