diff --git a/README.md b/README.md
index e8efa22..8140d7f 100644
--- a/README.md
+++ b/README.md
@@ -106,8 +106,8 @@ The tracking pixel instance is available on all vue component instances as $fb.
 |-------------------|----------------------------------------------------------------------------------------------------------|--------------------------------|
 | enable()          | If you had previously set `disabled: true` in config, enables the pixel and tracks the current page view | $fb.init(), $fb.track()        |
 | init()            | Initialises the pixel                                                                                    | fbq('init', <options.pixelId>) |
-| track()           | Sends a track event                                                                                      | fbq('track', <options.track>)  |
-| query(key, value) | Call the underlying fbq instance with anything else                                                      | fbq(key, value)                |
+| track(event)           | Sends a track event. It's `PageView` by default if the `event` is not defined.                                                                                      | fbq('track', <options.track>)  |
+| query(key, value, parameters) | Call the underlying fbq instance with anything else. The `parameters` attribute is optional.                                                      | fbq(key, value, parameters)                |
 
 ## License
 
diff --git a/lib/templates/plugin.js b/lib/templates/plugin.js
index 8367bc2..a91acb7 100644
--- a/lib/templates/plugin.js
+++ b/lib/templates/plugin.js
@@ -25,21 +25,26 @@ class Fb {
   /**
    * @method track
    */
-  track (event = null) {
+  track (event = null, parameters = null) {
     if (!event) {
       event = this.options.track
     }
 
-    this.query('track', event)
+    this.query('track', event, parameters)
   }
 
   /**
    * @method query
    * @param {string} cmd
    * @param {object} option
+   * @param {object} parameters
    */
-  query (cmd, option) {
-    this.fbq(cmd, option)
+  query (cmd, option, parameters = null) {
+    if (!parameters) {
+      this.fbq(cmd, option)
+    } else {
+      this.fbq(cmd, option, parameters)
+    }
   }
 }