Index: wflow-py/wflow/wflow_bmi.py
===================================================================
diff -u -r17cc5901f9b3026d2776295b1ace575269bb4489 -r4f224b2e50123f64885aea12613b3a3c10ce309c
--- wflow-py/wflow/wflow_bmi.py	(.../wflow_bmi.py)	(revision 17cc5901f9b3026d2776295b1ace575269bb4489)
+++ wflow-py/wflow/wflow_bmi.py	(.../wflow_bmi.py)	(revision 4f224b2e50123f64885aea12613b3a3c10ce309c)
@@ -85,7 +85,7 @@
 
         inames = []
         for varrol in namesroles:
-            if varrol[1] == 0 or varrol[1] == 2:
+            if varrol[1] == 0 or varrol[1] == 2 or varrol[1] == 3:
                 inames.append(varrol[0])
 
         self.inputoutputvars = inames
@@ -409,7 +409,7 @@
 
         inames = []
         for varrol in namesroles:
-            if varrol[1] == 0 or varrol[1] == 2:
+            if varrol[1] == 0 or varrol[1] == 2 or varrol[1] == 3:
                 inames.append(varrol[0])
 
         self.inputoutputvars = inames