Index: wflow-py/wflow/wflow_hbv.py
===================================================================
diff -u -r934e81e3af5db3b226cf5e66a9c4ace3fe47990b -re2ec55df353aa5f8db1810b035fdbc6329d31061
--- wflow-py/wflow/wflow_hbv.py	(.../wflow_hbv.py)	(revision 934e81e3af5db3b226cf5e66a9c4ace3fe47990b)
+++ wflow-py/wflow/wflow_hbv.py	(.../wflow_hbv.py)	(revision e2ec55df353aa5f8db1810b035fdbc6329d31061)
@@ -521,8 +521,8 @@
     # This is very handy for Ribasim etc...
     if self.SubCatchFlowOnly > 0:
         self.logger.info("Creating subcatchment-only drainage network (ldd)")
-        ds = downstream(self.TopoLdd,self.sCatch)
-        usid = ifthenelse(ds != self.sCatch,self.sCatch,0)
+        ds = downstream(self.TopoLdd,self.TopoId)
+        usid = ifthenelse(ds != self.TopoId,self.TopoId,0)
         self.TopoLdd = lddrepair(ifthenelse(boolean(usid),ldd(5),self.TopoLdd))
 
     # Used to seperate output per LandUse/management classes