diff --git a/script/RFscan/GunScan.py b/script/RFscan/GunScan.py
index 3f9ada5..e951360 100644
--- a/script/RFscan/GunScan.py
+++ b/script/RFscan/GunScan.py
@@ -36,8 +36,10 @@ camtool.start("simulation")
 
 #x  =  Channel("SINEG01-DSCR190:X-SIM",  type = 'd', alias='SCR-X')
 #dx =  Channel("SINEG01-DSCR190:DX-SIM", type = 'd', alias='SCR-DX')
-x  = CamtoolValue("gr_x_mean")
-dx = CamtoolValue("gr_x_fit_standard_deviation")
+#x  = CamtoolValue("gr_x_fit_mean")
+#dx = CamtoolValue("gr_x_fit_standard_deviation")
+x  = CamtoolValue("gr_x_com_egu")
+dx = CamtoolValue("gr_x_rms_egu")
 
 try:
     xb  = create_averager(x,  nb, 0.100)