fix the SwimmingDEMApplication (round 2)

Author: matekelemen

applications/SwimmingDEMApplication/python_scripts/swimming_sphere_strategy.py

@@ -74,7 +74,7 @@ def GetRotationalSchemeInstance(self, class_name):
 
     def GetHydrodynamicLawParametersIfItExists(self, properties):
         if self.project_parameters.Has('properties'):
-            for p in self.project_parameters["properties"]:
+            for p in self.project_parameters["properties"].values():
                 return p['hydrodynamic_law_parameters']
         return None