diff --git a/resources/coda.configuration.json.example b/resources/coda.configuration.json.example
index e5f5e8d..7505d90 100644
--- a/resources/coda.configuration.json.example
+++ b/resources/coda.configuration.json.example
@@ -1,11 +1,65 @@
 {
   "instrument": "coda",
-  "selector": "file:starts_with:/ess/data/coda",
+  "selector": "filename:starts_with:/ess/data/coda",
+  "variables" : {
+    "pid": {
+      "source": "NXS:/entry/entry_identifier_uuid",
+      "type": "string"
+    },
+    "proposal_id": {
+      "source": "NXS:/entry/experiment_identifier",
+      "type": "string",
+    },
+    "pi_firstname": {
+      "source": "SC:proposals/<proposal_id>:pi_firstname",
+      "type": "string"
+    },
+    "pi_lastname": {
+      "source": "SC:proposals/<proposal_id>:pi_lastname",
+      "type": "string"
+    },
+    "pi_email": {
+      "source": "SC:proposals/<proposal_id>:pi_email",
+      "type": "string"
+    },
+    "dataset_name": {
+      "source": "NXS:/entry/title",
+      "type": "string"
+    },
+    "instrument_name": {
+      "source": "NXS:/entry/instrument/name",
+      "type": "string",
+    },
+    "instrument_id": {
+      "source": "SC:instruments?filter=%7B%22where%22%20%3A%20%7B%20%22name%22%20%3A%20%22coda%22%20%7D%20%7D:id",
+      "type": "string"
+    },
+    "start_time": {
+      "source": "NXS:/entry/start_time",
+      "type": "date"
+    },
+    "end_time": {
+      "source": "NXS:/entry/end_time",
+      "type": "date"
+    },
+    "run_number": {
+      "source": "NXS:/entry/entry_identifier",
+      "type": "integer"
+    },
+    "acquisition_team_members_list": {
+      "source": "NXS:/entry/user_*/name",
+      "type": "string[]"
+    }
+    "acquisition_team_members": {
+      "source": "VALUES:join_with_space:<acquisition_team_members>",
+      "type": "string"
+    }
+  },
   "schema": {
     "pid": {
       "field_type": "high_level",
       "machine_name": "pid",
-      "source": "NXS:/entry/entry_identifier_uuid",
+      "value": "<pid>",
       "type": "string"
     },
     "type" : {
@@ -17,51 +71,37 @@
     "proposal_id": {
       "field_type": "high_level",
       "machine_name": "proposalId",
-      "source": "NXS:/entry/experiment_identifier",
+      "value": "proposal_id",
       "type": "string",
-      "variable": true
+    },
+    "dataset_name": {
+      "field_type": "high_level",
+      "machine_name": "datasetName",
+      "value": "<dataset_name>",
+      "type": "string"
     },
     "principal_investigator": {
       "field_type": "high_level",
       "machine_name": "principalInvestigator",
-      "source": [
-        "SC:proposals/<proposal_id>:pi_firstname",
-        "SC:proposals/<proposal_id>:pi_lastname"
-      ],
-      "separator" : " ",
+      "value": "<pi_firstname> <pi_lastname>",
       "type": "string"
     },
     "owner": {
       "field_type": "high_level",
       "machine_name": "owner",
-      "source": [
-        "SC:proposals/<proposal_id>:pi_firstname",
-        "SC:proposals/<proposal_id>:pi_lastname"
-      ],
+      "value": "<pi_firstname> <pi_lastname>",
       "type": "string"
     },
     "owner_email": {
       "field_type": "high_level",
       "machine_name": "ownerEmail",
-      "source": "SC:proposals/<proposal_id>:pi_email",
-      "type": "string"
-    },
-    "dataset_name": {
-      "field_type": "high_level",
-      "machine_name": "datasetName",
-      "source": "NXS:/entry/title",
+      "value": "<pi_email>",
       "type": "string"
     },
-    "instrument": {
-      "machine_name": "instrument_name",
-      "source": "NXS:/entry/instrument/name",
-      "type": "string",
-      "variable": true
-    },
     "instrument_id": {
       "field_type": "high_level",
       "machine_name": "instrumentId",
-      "source": "SC:instruments?filter=%7B%22where%22%20%3A%20%7B%20%22name%22%20%3A%20%22coda%22%20%7D%20%7D:id",
+      "value": "instrument_id",
       "type": "string"
     },
     "location": {
@@ -74,38 +114,35 @@
       "field_type": "scientific_metadata",
       "machine_name": "start_time",
       "human_name": "Start Time",
-      "source": "NXS:/entry/start_time",
-      "transformation": "timestamp_to_iso8601",
+      "value": "<start_time>",
       "type": "date"
     },
     "end_time": {
       "field_type": "scientific_metadata",
       "machine_name": "end_time",
       "human_name": "End Time",
-      "source": "NXS:/entry/end_time",
-      "transformation": "timestamp_to_iso8601",
+      "value": "<end_time>",
       "type": "date"
     },
     "run_number": {
       "field_type": "scientific_metadata",
       "machine_name": "run_number",
       "human_name": "Run Number",
-      "source": "NXS:/entry/entry_identifier",
+      "value": "<run_number>",
       "type": "integer"
     },
     "job_id": {
       "field_type": "scientific_metadata",
       "machine_name": "job_id",
       "human_name": "Job Id",
-      "source": "NXS:/entry/entry_identifier_uuid",
+      "value": "<pid>",
       "type": "integer"
     },
     "acquisition_team_members": {
       "field_type": "scientific_metadata",
       "machine_name": "acquisition_team_members",
       "human_name": "Acquisition Team Members",
-      "source": "NXS:/entry/user_*/name",
-      "separator": " , ",
+      "values": "<acquisition_team_members>",
       "type": "string"
     }
   }