Added notification for changing slots

force_bdss/core_plugins/dummy/csv_extractor/csv_extractor_model.py

-from traits.api import Int, String
+from traits.api import Int, String, on_trait_change
 
 from force_bdss.api import BaseDataSourceModel
 
@@ -8,3 +8,7 @@ class CSVExtractorModel(BaseDataSourceModel):
     row = Int()
     column = Int()
     cuba_type = String()
+
+    @on_trait_change("cuba_type")
+    def _notify_changes_slots(self):
+        self.changes_slots = True

force_bdss/core_plugins/dummy/kpi_adder/kpi_adder_model.py

-from traits.api import String
+from traits.api import String, on_trait_change
 
 from force_bdss.api import BaseKPICalculatorModel
 
@@ -6,3 +6,7 @@ from force_bdss.api import BaseKPICalculatorModel
 class KPIAdderModel(BaseKPICalculatorModel):
     cuba_type_in = String()
     cuba_type_out = String()
+
+    @on_trait_change("cuba_type_in,cuba_type_out")
+    def _notify_slots_changed(self):
+        self.changes_slots = True