diff --git a/index.html b/index.html
index b025f3d..c88faae 100644
--- a/index.html
+++ b/index.html
@@ -175,7 +175,7 @@
             var isConnected = false;
             var apiIsAlive = false;
             // TODO: change to valid url 
-            var apiServer = "localhost:8080"
+            var apiServer = "localhost"
 
             function hello_api() {
                 $.ajax({
@@ -188,8 +188,8 @@
                         ok_msg_conn("API-Server is running. Connection established");
                         apiIsAlive = true;
                     },
-                    error: function(data){ 
-                        err_msg_conn("API-Server unreachable");
+                    error: function(er){ 
+                        err_msg_conn(`API-Server unreachable. Error: ${JSON.stringify(er)}`);
                     }
                 });
             }
@@ -208,8 +208,8 @@
                         isConnected = true;
                         return true;
                     },
-                    error: function(data){ 
-                        err_msg_conn(`Cannot open web-socket with ${ip}:${port}`);
+                    error: function(er){ 
+                        err_msg_conn(`Cannot open web-socket with ${ip}:${port}. Error: ${JSON.stringify(er)}`);
                         return false;
                     }
                 });
@@ -234,8 +234,8 @@
                         ok_msg_conn(`Successfully sent data to ${address}`);
                         return true;
                     },
-                    error: function(data){ 
-                        err_msg_conn(`Cannot send data to ${address}`);
+                    error: function(er){ 
+                        err_msg_conn(`Cannot send data to ${address}. Error: ${JSON.stringify(er)}`);
                         return false;
                     }
                 });
@@ -273,14 +273,9 @@
                 }
                 const address = document.getElementById('address').value;
                 const data = document.getElementById('data').value;
-                // wr or rd
-                const wrd = document.querySelector('input[type=radio]:checked').value;
-                // true or false 
+                const wrd = () => document.querySelector('input[type=radio]:checked')?.value === "rd";
                 const inc = document.querySelector('#inc').checked;
-                // const wr = document.getElementById('wr').value;
-                // const rd = document.getElementById('rd').value;
-                // const inc = document.getElementById('inc').value;
-                // console.log(`${document.querySelector('input[type=radio]:checked').value} ${document.querySelector('#inc').checked}`);
+
                 if (isConnected) {
                     valid('ipAddress');
                     valid('port');
@@ -293,7 +288,7 @@
                         ok_msg_conn(`Sending data to address ${address}`);
                         valid('address');
                         valid('data');
-                        if (!sendData(data, address, wrd, inc)) {
+                        if (!sendData(data, address, wrd(), inc)) {
                             invalid('address');
                             invalid('data');
                         }