Header table is updated upon change

target/classes/static/js/datatransfer.js

@@ -253,7 +253,7 @@ function buildRowHtml(key, value){
     '<tr>' +
         '<td><input class="key" value="' + key + '"></td>' +
         '<td><input value="' + value + '"></td>' +
-        '<td><button class="modification-button btn-add"><i class="icon-plus"></i></button></td>' +
+        '<td><button class="modification-button btn-hashmap"><i class="icon-cancel"></i></button></td>' +
     '</tr>';
 }
 
@@ -381,7 +381,7 @@ function generateJson(){
 
 
 function convertTableToJson(){
-    var rows = $('.httpStatusValue');
+    const rows = $('#headerMapTable').children();
     console.log("Rows: "+rows.length);
     var obj = {};
     var key;