diff --git a/DDG4/python/DDSim/Helper/Meta.py b/DDG4/python/DDSim/Helper/Meta.py
index 019ca0de684613abd7e46036c5cd5d826803e922..b0f50554c826db043f09ce16890bc5950cb7c977 100644
--- a/DDG4/python/DDSim/Helper/Meta.py
+++ b/DDG4/python/DDSim/Helper/Meta.py
@@ -22,10 +22,12 @@ class Meta(ConfigHelper):
                                    'nargs': '+'}
     self.eventParameters = []
     self._runNumberOffset_EXTRA = {'help': "The run number offset to write in slcio output file. "
-                                           "E.g setting it to 42 will start counting runs from 42 instead of 0"}
+                                           "E.g setting it to 42 will start counting runs from 42 instead of 0",
+                                   'type' : int}
     self.runNumberOffset = 0
     self._eventNumberOffset_EXTRA = {'help': "The event number offset to write in slcio output file."
-                                             " E.g setting it to 42 will start counting events from 42 instead of 0"}
+                                             " E.g setting it to 42 will start counting events from 42 instead of 0",
+                                     'type' : int}
     self.eventNumberOffset = 0
 
   def parseEventParameters(self):