diff --git a/HTML/Assets/Detectors/Lumilo/student_doing_well__moving_average.js b/HTML/Assets/Detectors/Lumilo/student_doing_well__moving_average.js
index 36f7ab0..0bd0118 100644
--- a/HTML/Assets/Detectors/Lumilo/student_doing_well__moving_average.js
+++ b/HTML/Assets/Detectors/Lumilo/student_doing_well__moving_average.js
@@ -20,7 +20,7 @@ var prevStep = ""
 var attemptCorrect;
 var windowSize = 7;
 var threshold = 6;
-var attemptWindow = Array.apply(null, Array(windowSize)).map(Number.prototype.valueOf,0);
+var attemptWindow;
 
 
 function receive_transaction( e ){
@@ -45,6 +45,8 @@ function receive_transaction( e ){
 		attemptCorrect = (e.data.tutor_data.action_evaluation.toLowerCase() == "correct") ? 1 : 0;
 		attemptWindow.shift();
 		attemptWindow.push(attemptCorrect);
+		detector_output.history = JSON.stringify(attemptWindow);
+
 		var sumCorrect = attemptWindow.reduce(function(pv, cv) { return pv + cv; }, 0);
 		console.log(attemptWindow);
 	}
@@ -100,6 +102,14 @@ self.onmessage = function ( e ) {
 			detector_output.history = "";
 			detector_output.value = 0;
 		}
+
+		if (detector_output.history == "" || detector_output.history == null){
+			attemptWindow = Array.apply(null, Array(windowSize)).map(Number.prototype.valueOf,0);
+		}
+		else{
+			attemptWindow = JSON.parse(detector_output.history);
+		}
+
 	break;
     default:
 	break;
diff --git a/HTML/Assets/transaction_mailer_users.js b/HTML/Assets/transaction_mailer_users.js
index 50b8a10..fc722a5 100644
--- a/HTML/Assets/transaction_mailer_users.js
+++ b/HTML/Assets/transaction_mailer_users.js
@@ -50,20 +50,6 @@ TransactionMailerUsers.create = function(path, txDestURL, scriptsDestURL, authTo
 	}
 	TransactionMailerUsers.active.push(detector);
 	console.log("TransactionMailerUsers.create(): s, active["+i+"]=", s, TransactionMailerUsers.active[i]);
-    
-    detector.onmessage = function(e) 
-        {
-            var sel = e.data.name;
-            var action = "UpdateVariable";
-            var input = e.data.value;
-
-            var sai = new CTATSAI();
-            sai.setSelection(sel);
-            sai.setAction(action);
-            sai.setInput(input)
-            CTATCommShell.commShell.processComponentAction(sai=sai, tutorComponent=false, aTrigger="tutor")
-        };
-
 
     }
     return TransactionMailerUsers;
diff --git a/HTML/Assets/transaction_mailer_users_updateVarTable.js b/HTML/Assets/transaction_mailer_users_updateVarTable.js
new file mode 100644
index 0000000..50b8a10
--- /dev/null
+++ b/HTML/Assets/transaction_mailer_users_updateVarTable.js
@@ -0,0 +1,81 @@
+TransactionMailerUsers =
+{
+    process_transactions_url: "",
+    process_detectors_url: "",
+    authenticity_token: "",
+    mailerURL: "mail-worker.js",
+    mailer: null,
+    mailerPort: null,
+    scripts: ["Detectors/Lumilo/idle.js", 
+    "Detectors/Lumilo/system_misuse.js", 
+    "Detectors/Lumilo/struggle__moving_average.js", 
+    "Detectors/Lumilo/student_doing_well__moving_average.js", 
+    "Detectors/Lumilo/critical_struggle.js", 
+    "Detectors/Lumilo/invisible_hand_raise.js"],
+    active: []
+};
+
+TransactionMailerUsers.create = function(path, txDestURL, scriptsDestURL, authToken, scriptsInitzer)
+{
+    console.log("TransactionMailerUsers.create(): at entry, scriptsInitzer ", scriptsInitzer );
+
+    TransactionMailerUsers.mailer = new Worker(path+'/'+TransactionMailerUsers.mailerURL);
+    
+    TransactionMailerUsers.mailer.postMessage({ command: "process_transactions_url", "process_transactions_url": txDestURL, "process_detectors_url": scriptsDestURL, "authenticity_token": authToken});
+    TransactionMailerUsers.process_transactions_url = txDestURL;
+    TransactionMailerUsers.authenticity_token = authToken;
+    TransactionMailerUsers.process_detectors_url = scriptsDestURL;
+
+    var channel = new MessageChannel();
+    TransactionMailerUsers.mailer.postMessage(
+            { command: "connectTransactionAssembler" },
+            [ channel.port1 ]
+    );
+    TransactionMailerUsers.mailerPort = channel.port2;
+    TransactionMailerUsers.mailerPort.onmessage = function(event) {
+            console.log("From mailer: "+event);
+    };
+
+    for(var i = 0; i < TransactionMailerUsers.scripts.length; ++i)
+    {
+	var s = path + '/' + TransactionMailerUsers.scripts[i];
+	var detector = new Worker(s);
+	var mc = new MessageChannel();
+	TransactionMailerUsers.mailer.postMessage({ command: "connectDetector" }, [ mc.port1 ]);
+	detector.postMessage({ command: "connectMailer" }, [ mc.port2 ]);
+	if(scriptsInitzer)
+	{
+	    detector.postMessage({ command: "initialize", initializer: scriptsInitzer });
+	    console.log("TransactionMailerUsers.create(): sent command: initialize, scriptsInitzer ", scriptsInitzer );
+	}
+	TransactionMailerUsers.active.push(detector);
+	console.log("TransactionMailerUsers.create(): s, active["+i+"]=", s, TransactionMailerUsers.active[i]);
+    
+    detector.onmessage = function(e) 
+        {
+            var sel = e.data.name;
+            var action = "UpdateVariable";
+            var input = e.data.value;
+
+            var sai = new CTATSAI();
+            sai.setSelection(sel);
+            sai.setAction(action);
+            sai.setInput(input)
+            CTATCommShell.commShell.processComponentAction(sai=sai, tutorComponent=false, aTrigger="tutor")
+        };
+
+
+    }
+    return TransactionMailerUsers;
+};
+
+TransactionMailerUsers.sendTransaction = function(tx)
+{
+    TransactionMailerUsers.mailerPort.postMessage(tx);  // post to listener in other thread
+
+    var tmUsers = TransactionMailerUsers.active;
+    for(var i = 0; i < tmUsers; ++i)
+    {
+	tmUsers[i].postMessage(tx);
+    }
+};