diff --git a/custom_components/tesla_custom/strings.json b/custom_components/tesla_custom/strings.json
index 8b60f5c9..9f326c06 100644
--- a/custom_components/tesla_custom/strings.json
+++ b/custom_components/tesla_custom/strings.json
@@ -40,18 +40,36 @@
       "name": "Run API Command",
       "description": "Run an API command using controller.api",
       "fields": {
-        "email": "Email address",
-        "command": "Command",
-        "parameters": "Parameters"
+        "email": {
+          "name": "Email address",
+          "description": "Email address (optional if only one account)"
+        },
+        "command": {
+          "name": "Command",
+          "description": "Command to run. See https://github.com/zabuldon/teslajsonpy/blob/master/teslajsonpy/endpoints.json"
+        },
+        "parameters": {
+          "name": "Parameters",
+          "description": "Parameters in a dictionary. `path_vars` replace variables in endpoints.json path. All others are passed directly to controller.api. For command parameters see https://tesla-api.timdorr.com/vehicle/commands."
+        }
       }
     },
     "polling_interval": {
       "name": "Set Polling Interval",
       "description": "Set the polling interval for the Tesla API",
       "fields": {
-        "scan_interval": "Interval (seconds)",
-        "email": "Email address",
-        "vin": "Vehicle VIN"
+        "scan_interval": {
+          "name": "Interval (seconds)",
+          "description": "Number of seconds between each poll.  See https://github.com/alandtse/tesla/wiki/Polling-policy more information."
+        },
+        "email": {
+          "name": "Email address",
+          "description": "Email address (optional if only one account)"
+        },
+        "vin": {
+          "name": "Vehicle VIN",
+          "description": "Vehicle VIN (if not provided then default polling interval will be updated)"
+        }
       }
     }
   }