diff --git a/omas/machine_mappings/nstxu.json b/omas/machine_mappings/nstxu.json
index ebac4835..4167f527 100644
--- a/omas/machine_mappings/nstxu.json
+++ b/omas/machine_mappings/nstxu.json
@@ -156,6 +156,7 @@
   "PYTHON": "magnetics_hardware(ods, {pulse})"
  },
  "magnetics.flux_loop.:.flux.data": {
+  "COCOSIO": 11,
   "PYTHON": "magnetics_floops_data(ods, {pulse})"
  },
  "magnetics.flux_loop.:.flux.data_error_upper": {
diff --git a/omas/machine_mappings/nstxu.py b/omas/machine_mappings/nstxu.py
index fd9c1107..09173434 100644
--- a/omas/machine_mappings/nstxu.py
+++ b/omas/machine_mappings/nstxu.py
@@ -183,22 +183,21 @@ def magnetics_floops_data(ods, pulse):
 
     ods1 = ODS()
     unwrap(magnetics_hardware)(ods1, pulse)
-    with omas_environment(ods, cocosio=1):
-        fetch_assign(
-            ods,
-            ods1,
-            pulse,
-            channels='magnetics.flux_loop',
-            identifier='magnetics.flux_loop.{channel}.identifier',
-            time='magnetics.flux_loop.{channel}.flux.time',
-            data='magnetics.flux_loop.{channel}.flux.data',
-            validity='magnetics.flux_loop.{channel}.flux.validity',
-            mds_server='nstxu',
-            mds_tree='OPERATIONS',
-            tdi_expression='\\{signal}',
-            time_norm=1.0,
-            data_norm=1.0,
-        )
+    fetch_assign(
+        ods,
+        ods1,
+        pulse,
+        channels='magnetics.flux_loop',
+        identifier='magnetics.flux_loop.{channel}.identifier',
+        time='magnetics.flux_loop.{channel}.flux.time',
+        data='magnetics.flux_loop.{channel}.flux.data',
+        validity='magnetics.flux_loop.{channel}.flux.validity',
+        mds_server='nstxu',
+        mds_tree='OPERATIONS',
+        tdi_expression='\\{signal}',
+        time_norm=1.0,
+        data_norm=1.0,
+    )
 
     # handle uncertainties
     signals = get_support_file(OMFITnstxMHD, nstx_filenames('signals', pulse))
@@ -226,22 +225,21 @@ def magnetics_probes_data(ods, pulse):
 
     ods1 = ODS()
     unwrap(magnetics_hardware)(ods1, pulse)
-    with omas_environment(ods, cocosio=1):
-        fetch_assign(
-            ods,
-            ods1,
-            pulse,
-            channels='magnetics.b_field_pol_probe',
-            identifier='magnetics.b_field_pol_probe.{channel}.identifier',
-            time='magnetics.b_field_pol_probe.{channel}.field.time',
-            data='magnetics.b_field_pol_probe.{channel}.field.data',
-            validity='magnetics.b_field_pol_probe.{channel}.field.validity',
-            mds_server='nstxu',
-            mds_tree='OPERATIONS',
-            tdi_expression='\\{signal}',
-            time_norm=1.0,
-            data_norm=1.0,
-        )
+    fetch_assign(
+        ods,
+        ods1,
+        pulse,
+        channels='magnetics.b_field_pol_probe',
+        identifier='magnetics.b_field_pol_probe.{channel}.identifier',
+        time='magnetics.b_field_pol_probe.{channel}.field.time',
+        data='magnetics.b_field_pol_probe.{channel}.field.data',
+        validity='magnetics.b_field_pol_probe.{channel}.field.validity',
+        mds_server='nstxu',
+        mds_tree='OPERATIONS',
+        tdi_expression='\\{signal}',
+        time_norm=1.0,
+        data_norm=1.0,
+    )
 
     # handle uncertainties
     signals = get_support_file(OMFITnstxMHD, nstx_filenames('signals', pulse))
diff --git a/omas/omas_cocos.py b/omas/omas_cocos.py
index 7269404c..f3c25299 100644
--- a/omas/omas_cocos.py
+++ b/omas/omas_cocos.py
@@ -83,8 +83,8 @@
 _cocos_signals['camera_x_rays.filter_window.centre.phi']='?'                               #[ADD?]# 2.000000 # phi  [rad]
 
 # CHARGE_EXCHANGE
-_cocos_signals['charge_exchange.channel.:.ion.:.velocity_pol.data']='?'                                 #[ADD?]# 2.666667 # velocity  _pol  [m.s^-1]
-_cocos_signals['charge_exchange.channel.:.ion.:.velocity_tor.data']='?'                                 #[ADD?]# 2.666667 # velocity  _tor  [m.s^-1]
+_cocos_signals['charge_exchange.channel.:.ion.:.velocity_pol.data']='POL'                                      # 2.666667 # velocity  _pol  [m.s^-1]
+_cocos_signals['charge_exchange.channel.:.ion.:.velocity_tor.data']='TOR'                                      # 2.666667 # velocity  _tor  [m.s^-1]
 _cocos_signals['charge_exchange.channel.:.momentum_tor.data']='?'                                       #[ADD?]# 2.500000 # momentum  _tor  [kg.m^-1.s^-1]
 _cocos_signals['charge_exchange.aperture.centre.phi']='TOR'                                                    # 2.000000 # phi  [rad]
 _cocos_signals['charge_exchange.channel.:.position.phi.data']='TOR'                                            # 1.800000 # phi  [rad]