diff --git a/prefs.js b/prefs.js
index d8d61eb..d03c644 100644
--- a/prefs.js
+++ b/prefs.js
@@ -169,12 +169,10 @@ function buildPrefsWidget() {
 
     let accountsChooserContainer = new Gtk.Box( { orientation: Gtk.Orientation.VERTICAL,
 						  homogeneous: false, } );
-    monitoLog ( 'Box ' + this._accountsWidgetContainer );
-    monitoLog ( 'Func ' + this._accountsWidgetContainer.pack_start );
     if ( this.gtkVersion == 4 )
         this._accountsWidgetContainer.append(accountsChooserContainer, true, true, 0);
     else
-        this._accountsWidgetContainer.add(accountsChooserContainer, true, true, 0);
+        this._accountsWidgetContainer.add(accountsChooserContainer);
 
     this.accountsChooser = new Gtk.ListBox ( { valign: Gtk.Align.FILL,
 					      hexpand: true,
@@ -182,7 +180,7 @@ function buildPrefsWidget() {
     if ( this.gtkVersion == 4 )
         accountsChooserContainer.append(this.accountsChooser, true, true, 0);
     else
-        accountsChooserContainer.add(this.accountsChooser, true, true, 0);
+        accountsChooserContainer.add(this.accountsChooser);
 
     // Account list
     for ( var server_id of this.getServersList ( ) )
@@ -194,7 +192,7 @@ function buildPrefsWidget() {
     if ( this.gtkVersion == 4 )
         accountsChooserContainer.append(accountsChooserActionBar, true, true, 0);
     else
-        accountsChooserContainer.add(accountsChooserActionBar, true, true, 0);
+        accountsChooserContainer.add(accountsChooserActionBar);
 
     let accountCreateButton = Gtk.Button.new_from_icon_name ( 'list-add',
                                                               Gtk.IconSize.BUTTON );
@@ -367,19 +365,21 @@ function createColumnsPrefTab ( noteBook, type, isActive )
         grid.margin = 18;
     noteBook.append_page ( grid, new Gtk.Label ( { label: _(type), } ) );
 
-    let _treeView = new Gtk.TreeView ( { headers_visible: true,
+    this.treeView = new Gtk.TreeView ( { headers_visible: true,
                                          reorderable: true,
                                          hexpand: true,
                                          vexpand: true });
 
     let columnNumbers = new Gtk.TreeViewColumn ( { title: _("Column") } );
-    let rendererNumbers = new Gtk.CellRendererText ( { editable: true } );
+    let rendererNumbers = new Gtk.CellRendererCombo ( { editable: true } );
+    rendererNumbers.col = 0;
     if ( this.gtkVersion == 4 )
         columnNumbers.append(rendererNumbers, true);
     else
         columnNumbers.pack_start(rendererNumbers, true);
     columnNumbers.add_attribute(rendererNumbers, 'text', 0);
-    _treeView.append_column(columnNumbers);
+    this.treeView.append_column(columnNumbers);
+    rendererNumbers.connect('edited', Lang.bind ( this, this.editColumn ) );
 
     let _colSize = new Gtk.TreeViewColumn ( { title: _("Size") } );
     let _colRenderer = new Gtk.CellRendererText ( { editable: true } );
@@ -388,11 +388,13 @@ function createColumnsPrefTab ( noteBook, type, isActive )
     else
         _colSize.pack_start(_colRenderer, true);
     _colSize.add_attribute(_colRenderer, 'text', 1);
-    _treeView.append_column(_colSize);
+    this.treeView.append_column(_colSize);
+    _colRenderer.col = 1;
+    _colRenderer.connect('edited', Lang.bind ( this, this.editColumn ) );
 
 //    _treeView.connect('row-activated', this._editPath.bind(this));
     
-    grid.attach ( _treeView, 0, 1, 1, 1 );
+    grid.attach ( this.treeView, 0, 1, 1, 1 );
 
     // Action Bar
     let rowsChooserActionBar = new Gtk.ActionBar ( { valign: Gtk.Align.END } );
@@ -407,7 +409,7 @@ function createColumnsPrefTab ( noteBook, type, isActive )
     rowsChooserActionBar.add ( rowRemoveButton );
     rowRemoveButton.connect ( 'clicked', Lang.bind ( this, this.removeColumnRow ) );
 
-    grid.attach ( columnsChooserActionBar, 0, 2, 1, 1 );
+    grid.attach ( rowsChooserActionBar, 0, 2, 1, 1 );
 
 }
 
@@ -418,6 +420,11 @@ function activateAccountRow ( ) {
         this._accountsWidget.destroy ( );
     this.createAccountWidgets ( true );
 
+    this.store = new Gtk.ListStore();
+    this.store.set_column_types([GObject.TYPE_STRING, GObject.TYPE_INT]);
+    this.store.filter_new(null);	
+    this.treeView.model = this.store;
+
     let _row = this.accountsChooser.get_selected_row();
     monitoLog('Active:' + _row.server);
     let _account_settings = getAccountSettings ( _row.server );
@@ -541,15 +548,30 @@ function setColor ( color )
 function createColumnRow ( ) {
     monitoLog ( '> Create column row' );
 
-    _item = _store.append(null);
-    _store.set_value(_item, 0, 'bar' );
-    _store.set_value(_item, 1, 1 );
-
+    let _item = this.store.append(null);
+    this.store.set_value(_item, 0, 'bar' );
+    this.store.set_value(_item, 1, 1 );
 }
 
 
-function removeColumnRow ( ) {
+function removeColumnRow ( widget ) {
     monitoLog ( '> Remove column row' );
+    let [any, model, _iter] = this.treeView.get_selection().get_selected ( );
+    this.store.remove ( _iter );
+}
+
+
+function editColumn ( widget, path, text )
+{
+    monitoLog ( '> Edit column row ' + widget.col + ', ' + path + ', ' + text )
+    let _iter = this.store.get_iter ( Gtk.TreePath.new_from_string ( path ) );
+    monitoLog ( '> Iter ' + _iter[1] );
+    if ( widget.col == 1 )
+        this.store.set_value(_iter[1], widget.col, parseInt(text) );
+    else
+        this.store.set_value(_iter[1], widget.col, text );
+
+    return true;
 }