diff --git a/lmwsip.py b/lmwsip.py
index 9fc7bfc..9fa297b 100644
--- a/lmwsip.py
+++ b/lmwsip.py
@@ -354,9 +354,9 @@ class lmwTimeSerie:
 
     def addvalues(self, start, delta, values):
         for e in values.split(";"):
-            a = [ start ]
-            a.append(e.split("/"))
-            self.ts.append(a)
+            v = e.split("/")
+            v[0] = v[0].split(",")
+            self.ts.append([start, v])
             start += delta
 
 class sipTimeSeriesError(Exception):