diff --git a/model/profiling/interaction/graph_offline.py b/model/profiling/interaction/graph_offline.py
index 7a332c29c418a5f719b08735b3d11e50d486f17d..562b6815b7d7c450712a3ae01bed8077b3fad608 100644
--- a/model/profiling/interaction/graph_offline.py
+++ b/model/profiling/interaction/graph_offline.py
@@ -1,4 +1,5 @@
 from collections import defaultdict, OrderedDict
+import time, shutil
 
 import logging; log = logging.getLogger(__name__)
 log_user = logging.getLogger("mcgdb.log.user")
@@ -94,7 +95,7 @@ End-of-line modifiers:
                         values = values.replace(" +", "")
                         
                     cast = float if "." in values else int
-                    values = list(map(cast, values.split(" ")))
+                    values = list(map(cast, values.strip().split(" ")))
                     if not values:
                         raise ValueError("Values list is empty ...")
                 except Exception as e:
@@ -107,9 +108,8 @@ End-of-line modifiers:
                     do_sort = values
                     values = sorted(do_sort)
                     name += " (sorted)"
-                
                 elif do_sort:
-                    values = [x for (y,x) in sorted(zip(do_sort, values))]
+                    values = [y for (x,y) in sorted(zip(do_sort, values))]
                 
                 if do_pick and do_pick[1] is None:
                     do_pick[1] = values
@@ -119,7 +119,7 @@ End-of-line modifiers:
             
                 elif do_pick:
                     value_to_pick, pick_values, pick_name = do_pick
-                
+                    
                     name = "{} (picked from {} = {})".format(name, pick_name, value_to_pick)
                     values = [v for p, v in zip(pick_values, values) if p == value_to_pick]
                 
@@ -155,8 +155,14 @@ End-of-line modifiers:
             except Exception: pass # already closed, doesn't matter
 
         title = ", ".join(names)
-        target = args if args else '/tmp/chart.png'
+
+        DEFAULT = '/tmp/chart', ".png"
+        if args:
+            target = args
+        else:
+            target = "".join((DEFAULT[0], time.strftime("-%Y%m%d-%H%M%S"), DEFAULT[1]))
 
         chart.title = title
         log_user.info("Rendering chart plot of {} into {}".format(title, target))
         chart.render_to_png(target)
+        shutil.copy(target, "".join(DEFAULT))