diff --git a/script/devices/Detector.py b/script/devices/Detector.py
index 0f3d65b..a8dd150 100644
--- a/script/devices/Detector.py
+++ b/script/devices/Detector.py
@@ -19,7 +19,7 @@ class Detector(DeviceBase):
         print pars
         print type(pars)
         self.p=pars
-        if type(pars) == dict:
+        if type(pars) == dict or isinstance(p, java.util.Map) :
             self.simulated_pars=pars
 
     def doClose(self):