Index: wflow/wf_DynamicFramework.py
===================================================================
diff -u -ra9498adee6baab0a0abaa331041be8948510167b -r4989830126f5201eac4f0d6bb5d4a748fe0c13a3
--- wflow/wf_DynamicFramework.py	(.../wf_DynamicFramework.py)	(revision a9498adee6baab0a0abaa331041be8948510167b)
+++ wflow/wf_DynamicFramework.py	(.../wf_DynamicFramework.py)	(revision 4989830126f5201eac4f0d6bb5d4a748fe0c13a3)
@@ -626,7 +626,7 @@
         """
         if self._userModel()._inDynamic():
             for cmdd in self.modelparameters_changes_timestep:
-                var = cmdd.replace("self._userModel().", "")
+                var = cmdd.replace("self._userModel().", "").strip()
                 if not hasattr(self._userModel(), var):
                     self.logger.error(
                         "Variable change (apply_timestep) could not be applied to "
@@ -636,22 +636,32 @@
                     setattr(
                         self._userModel(),
                         var,
-                        self.modelparameters_changes_timestep[cmdd],
+                        getattr(self._userModel(), var) * float(self.modelparameters_changes_timestep[cmdd].split('*')[1]) #self.modelparameters_changes_timestep[cmdd],
                     )
+                    self.logger.warning(
+                        "Variable change (apply_timestep) applied to "
+                        + str(var) + " with factor" + self.modelparameters_changes_timestep[cmdd].split('*')[1]
+                    )
 
         if self._userModel()._inInitial():
+#            import pdb; pdb.set_trace()
             for cmdd in self.modelparameters_changes_once:
-                var = cmdd.replace("self._userModel().", "")
+                var = cmdd.replace("self._userModel().", "").strip()
                 if not hasattr(self._userModel(), var):
                     self.logger.error(
                         "Variable change ((apply_once) could not be applied to "
                         + str(var)
                     )
                 else:
                     setattr(
-                        self._userModel(), var, self.modelparameters_changes_once[cmdd]
+                        self._userModel(), var, getattr(self._userModel(), var) * float(self.modelparameters_changes_once[cmdd].split('*')[1])
                     )
+                    self.logger.warning(
+                        "Variable change (apply_once) applied to "
+                        + str(var) + " with factor" + self.modelparameters_changes_once[cmdd].split('*')[1]
+                    )
 
+
     def wf_updateparameters(self):
         """
         Update the model Parameters (can be used in static and dynamic part of the model)