diff --git a/build/picreel.js b/build/picreel.js
index 411c2f1..922ceae 100644
--- a/build/picreel.js
+++ b/build/picreel.js
@@ -17,9 +17,11 @@
       this.emailSelector  = this.emailSelector   || "input[name='email']";
       this.errorClass     = this.errorClass      || "subscriber-error";
       this.loadingClass   = this.loadingClass    || "subscriber-loading";
-      this.onerror        = this.onerror         || function() {};
-      this.onsuccess      = this.onsuccess       || function() {};
-      this.oncomplete     = this.oncomplete      || function() {};
+      this.onerror        = this.onerror         || noop;
+      this.onsuccess      = this.onsuccess       || noop;
+      this.oncomplete     = this.oncomplete      || noop;
+      this.vars           = this.vars            || [];
+      this.event          = this.event           || null;
       this.action         = this.action          || "/";
       this.carrier        = null;
 
@@ -84,6 +86,8 @@
       var data = {};
 
       data['email'] = this.$(this.emailSelector).val();
+      if(this.vars.length) data['vars'] = this.vars;
+      if(this.event) data['event'] = this.event;
 
       if (this.lists.length) {
         data['lists'] = [];
@@ -141,7 +145,7 @@
       });
     };
 
-    getTopWindow = function() {
+    var getTopWindow = function() {
       var topWindow = window;
       while (topWindow !== topWindow.parent) {
         topWindow = topWindow.parent;
@@ -149,6 +153,8 @@
       return topWindow;
     };
 
+    var noop = function() {};
+
     return APLSubscriber;
 
   })();
diff --git a/build/picreel.min.js b/build/picreel.min.js
index 9e63f77..228ca7b 100644
--- a/build/picreel.min.js
+++ b/build/picreel.min.js
@@ -1,2 +1,2 @@
-!function a(b,c,d){function e(g,h){if(!c[g]){if(!b[g]){var i="function"==typeof require&&require;if(!h&&i)return i(g,!0);if(f)return f(g,!0);var j=new Error("Cannot find module '"+g+"'");throw j.code="MODULE_NOT_FOUND",j}var k=c[g]={exports:{}};b[g][0].call(k.exports,function(a){var c=b[g][1][a];return e(c?c:a)},k,k.exports,a,b,c,d)}return c[g].exports}for(var f="function"==typeof require&&require,g=0;g<d.length;g++)e(d[g]);return e}({1:[function(a,b,c){(function(){var a=function(){function a(a){for(arg in a)"undefined"==typeof this.arg&&(this[arg]=a[arg]);this.topWindow=getTopWindow(),this.$=this.$||window.jQuery,this.requestUrl=this.getRequestUrl()||window.location.href,this.lists=this.lists||[],this.submitSelector=this.submitSelector||".submit",this.emailSelector=this.emailSelector||"input[name='email']",this.errorClass=this.errorClass||"subscriber-error",this.loadingClass=this.loadingClass||"subscriber-loading",this.onerror=this.onerror||function(){},this.onsuccess=this.onsuccess||function(){},this.oncomplete=this.oncomplete||function(){},this.action=this.action||"/",this.carrier=null,this.buildSubscriberLists(),this.bindNewClickEvents()}return a.prototype.buildSubscriberLists=function(){this.list&&this.lists.push(this.list)},a.prototype.applyErrorStatus=function(){},a.prototype.applyErrorStatus=function(){this.$(this.emailSelector).addClass(this.errorClass)},a.prototype.removeErrorStatus=function(){this.$(this.emailSelector).removeClass(this.errorClass)},a.prototype.applyLoadingStatus=function(){this.$(this.emailSelector).addClass(this.loadingClass)},a.prototype.removeLoadingStatus=function(){this.$(this.emailSelector).removeClass(this.loadingClass)},a.prototype.getRequestUrl=function(){var a=this.$('input[name="request_url"]').val();return a?a:null},a.prototype.handleButtonClick=function(a){this.removeErrorStatus(),this.applyLoadingStatus();var b=this.$(this.emailSelector).val();this.emailIsValid(b)?this.submit():this.handleError()},a.prototype.emailIsValid=function(a){var b=/^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;return b.test(a)},a.prototype.formToCarrierParams=function(){var a={};if(a.email=this.$(this.emailSelector).val(),this.lists.length){a.lists=[];for(var b=0;b<this.lists.length;b++)a.lists.push(this.lists[b])}return a},a.prototype.handleSuccess=function(){"function"==typeof this.onsuccess&&this.onsuccess(),this.$(self).trigger("onPicAfterSubmit")},a.prototype.handleError=function(){"function"==typeof this.onerror&&this.onerror(),this.removeLoadingStatus(),this.applyErrorStatus()},a.prototype.handleComplete=function(){"function"==typeof this.oncomplete&&this.oncomplete(),this.removeLoadingStatus()},a.prototype.submit=function(){var a=this,b={url:a.action,data:a.formToCarrierParams(),dataType:"jsonp",complete:function(){a.handleComplete()},success:function(){a.handleSuccess()},error:function(){a.handleError()},crossDomain:!0};this.carrier=this.$.ajax(b)},a.prototype.bindNewClickEvents=function(){var a=this;this.$(window).on("onBeforeSubmit",function(b){a.handleButtonClick(b)})},getTopWindow=function(){for(var a=window;a!==a.parent;)a=a.parent;return a},a}();"undefined"!=typeof b&&null!==b&&(b.exports=a),b.exports=a}).call(this)},{}],2:[function(a,b,c){(function(){"undefined"!=typeof window&&null!==window&&(window.APLSubscriber=a("./factories/subscriber"))}).call(this)},{"./factories/subscriber":1}]},{},[1,2]);
+!function a(b,c,d){function e(g,h){if(!c[g]){if(!b[g]){var i="function"==typeof require&&require;if(!h&&i)return i(g,!0);if(f)return f(g,!0);var j=new Error("Cannot find module '"+g+"'");throw j.code="MODULE_NOT_FOUND",j}var k=c[g]={exports:{}};b[g][0].call(k.exports,function(a){var c=b[g][1][a];return e(c?c:a)},k,k.exports,a,b,c,d)}return c[g].exports}for(var f="function"==typeof require&&require,g=0;g<d.length;g++)e(d[g]);return e}({1:[function(a,b,c){(function(){var a=function(){function a(a){for(arg in a)"undefined"==typeof this.arg&&(this[arg]=a[arg]);this.topWindow=b(),this.$=this.$||window.jQuery,this.requestUrl=this.getRequestUrl()||window.location.href,this.lists=this.lists||[],this.submitSelector=this.submitSelector||".submit",this.emailSelector=this.emailSelector||"input[name='email']",this.errorClass=this.errorClass||"subscriber-error",this.loadingClass=this.loadingClass||"subscriber-loading",this.onerror=this.onerror||c,this.onsuccess=this.onsuccess||c,this.oncomplete=this.oncomplete||c,this.vars=this.vars||[],this.event=this.event||null,this.action=this.action||"/",this.carrier=null,this.buildSubscriberLists(),this.bindNewClickEvents()}a.prototype.buildSubscriberLists=function(){this.list&&this.lists.push(this.list)},a.prototype.applyErrorStatus=function(){},a.prototype.applyErrorStatus=function(){this.$(this.emailSelector).addClass(this.errorClass)},a.prototype.removeErrorStatus=function(){this.$(this.emailSelector).removeClass(this.errorClass)},a.prototype.applyLoadingStatus=function(){this.$(this.emailSelector).addClass(this.loadingClass)},a.prototype.removeLoadingStatus=function(){this.$(this.emailSelector).removeClass(this.loadingClass)},a.prototype.getRequestUrl=function(){var a=this.$('input[name="request_url"]').val();return a?a:null},a.prototype.handleButtonClick=function(a){this.removeErrorStatus(),this.applyLoadingStatus();var b=this.$(this.emailSelector).val();this.emailIsValid(b)?this.submit():this.handleError()},a.prototype.emailIsValid=function(a){var b=/^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;return b.test(a)},a.prototype.formToCarrierParams=function(){var a={};if(a.email=this.$(this.emailSelector).val(),this.vars.length&&(a.vars=this.vars),this.event&&(a.event=this.event),this.lists.length){a.lists=[];for(var b=0;b<this.lists.length;b++)a.lists.push(this.lists[b])}return a},a.prototype.handleSuccess=function(){"function"==typeof this.onsuccess&&this.onsuccess(),this.$(self).trigger("onPicAfterSubmit")},a.prototype.handleError=function(){"function"==typeof this.onerror&&this.onerror(),this.removeLoadingStatus(),this.applyErrorStatus()},a.prototype.handleComplete=function(){"function"==typeof this.oncomplete&&this.oncomplete(),this.removeLoadingStatus()},a.prototype.submit=function(){var a=this,b={url:a.action,data:a.formToCarrierParams(),dataType:"jsonp",complete:function(){a.handleComplete()},success:function(){a.handleSuccess()},error:function(){a.handleError()},crossDomain:!0};this.carrier=this.$.ajax(b)},a.prototype.bindNewClickEvents=function(){var a=this;this.$(window).on("onBeforeSubmit",function(b){a.handleButtonClick(b)})};var b=function(){for(var a=window;a!==a.parent;)a=a.parent;return a},c=function(){};return a}();"undefined"!=typeof b&&null!==b&&(b.exports=a),b.exports=a}).call(this)},{}],2:[function(a,b,c){(function(){"undefined"!=typeof window&&null!==window&&(window.APLSubscriber=a("./factories/subscriber"))}).call(this)},{"./factories/subscriber":1}]},{},[1,2]);
 //# sourceMappingURL=picreel.min.js.map
\ No newline at end of file
diff --git a/build/picreel.min.js.map b/build/picreel.min.js.map
index 75326f7..b6532ff 100644
--- a/build/picreel.min.js.map
+++ b/build/picreel.min.js.map
@@ -1 +1 @@
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\ No newline at end of file
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diff --git a/lib/factories/subscriber.js b/lib/factories/subscriber.js
index cf0b7e4..f689cc6 100644
--- a/lib/factories/subscriber.js
+++ b/lib/factories/subscriber.js
@@ -16,9 +16,11 @@
       this.emailSelector  = this.emailSelector   || "input[name='email']";
       this.errorClass     = this.errorClass      || "subscriber-error";
       this.loadingClass   = this.loadingClass    || "subscriber-loading";
-      this.onerror        = this.onerror         || function() {};
-      this.onsuccess      = this.onsuccess       || function() {};
-      this.oncomplete     = this.oncomplete      || function() {};
+      this.onerror        = this.onerror         || noop;
+      this.onsuccess      = this.onsuccess       || noop;
+      this.oncomplete     = this.oncomplete      || noop;
+      this.vars           = this.vars            || [];
+      this.event          = this.event           || null;
       this.action         = this.action          || "/";
       this.carrier        = null;
 
@@ -83,6 +85,8 @@
       var data = {};
 
       data['email'] = this.$(this.emailSelector).val();
+      if(this.vars.length) data['vars'] = this.vars;
+      if(this.event) data['event'] = this.event;
 
       if (this.lists.length) {
         data['lists'] = [];
@@ -140,7 +144,7 @@
       });
     };
 
-    getTopWindow = function() {
+    var getTopWindow = function() {
       var topWindow = window;
       while (topWindow !== topWindow.parent) {
         topWindow = topWindow.parent;
@@ -148,6 +152,8 @@
       return topWindow;
     };
 
+    var noop = function() {};
+
     return APLSubscriber;
 
   })();
diff --git a/package.json b/package.json
index ec3b54d..a4afddd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "picreel",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "private": true,
   "author": {
     "name": "Brian Sage",
diff --git a/test/lib/picreel_tests.js b/test/lib/picreel_tests.js
index 08a5e4e..7dcceb3 100644
--- a/test/lib/picreel_tests.js
+++ b/test/lib/picreel_tests.js
@@ -7,14 +7,27 @@ QUnit.test("Acumen Picreel Library", function(assert) {
 });
 
 QUnit.test("APL Subscriber", function(assert) {
-  var params = {
+  var validVarsName  = 'hurp';
+  var validListName  = 'SUBSCRIBERS';
+  var validEventName = 'subscribe';
+  var validEmail     = 'Valid.Email1@address1.co.uk';
+  var invalidEmail   = 'invalid.email@address';
+  var params         = {
     submitSelector: "#submit-button",
     emailSelector:  "input[name='email']",
     handler:        "/test/test_handler.js",
-    list:           'SUBSCRIBERS',
+    list:           validListName,
+    vars:           [validVarsName, 'durp'],
+    event:          validEventName,
     $:              window.jQuery,
     onerror:        function() {}
   };
+  var validFormData = {
+    email: validEmail,
+    lists: [validListName],
+    vars:  [validVarsName, 'durp'],
+    event: validEventName
+  };
   var subject                = new APLSubscriber(params);
   var handleButtonClickSpy   = sinon.spy(subject, "handleButtonClick");
   var submitSpy              = sinon.spy(subject, "submit");
@@ -23,13 +36,10 @@ QUnit.test("APL Subscriber", function(assert) {
   var applyLoadingStatusSpy  = sinon.spy(subject, "applyLoadingStatus");
   var removeErrorStatusSpy   = sinon.spy(subject, "removeErrorStatus");
   var formToCarrierParamsSpy = sinon.spy(subject, "formToCarrierParams");
-  var validEmail             = 'Valid.Email1@address1.co.uk';
-  var invalidEmail           = 'invalid.email@address';
-  var validFormData          = {'email': validEmail, 'lists':['SUBSCRIBERS']};
 
   assert.strictEqual(subject.topWindow, window, "topWindow should be window");
 
-  assert.ok(subject.emailIsValid(validEmail), "Recognizes an valid email");
+  assert.ok(subject.emailIsValid(validEmail), "Recognizes a valid email");
 
   assert.notOk(subject.emailIsValid(invalidEmail), "Recognizes an invalid email");
 
@@ -56,7 +66,9 @@ QUnit.test("APL Subscriber", function(assert) {
 
   $(subject.emailSelector).val(validEmail);
   $(subject.submitSelector).trigger("onBeforeSubmit");
-  assert.deepEqual(subject.formToCarrierParams(), validFormData, "If a list is specified, it is submitted");
+  assert.ok((subject.formToCarrierParams().lists.indexOf(validListName) >= 0), "If a list is specified, it is submitted");
+  assert.ok((subject.formToCarrierParams().vars.indexOf(validVarsName) >= 0), "If var values exist, they are submitted");
+  assert.ok((subject.formToCarrierParams().event == validEventName), "If an event name exists, it is submitted");
 
   carrierSpy.reset();
   $(subject.emailSelector).val(validEmail);