diff --git a/dakota_interface.py b/dakota_interface.py
index e35afa8..5c6c0bd 100644
--- a/dakota_interface.py
+++ b/dakota_interface.py
@@ -116,9 +116,13 @@ def process(fn_json_args):
                 args = pp[1:]
                 if fn == 'self':
                     r = bps[args[1]]
+                    inter[args[1]] = bps[args[1]]
                 else:
                     r = eval(f'dpf.{fn}')(interface_args, params, bps, inter, *args)
-                results[rn].function = r
+                # results[rn].function = r
+            for rn in results.descriptors:
+                if rn in inter.keys():
+                    results[rn].function = inter[rn]
 
         elif type(interface_args['post_process']).__name__ == 'dict':
             # Location of the origin relative to a ref point