Does not want to be inserted as html

onOk: function() {

        var dialog = this;

        var contentFromTextarea = dialog.getValueOf('tab-main','content');
        var rowArray = new Array();
        var cellArray = new Array();

        var row = '';

        rowArray = contentFromTextarea.split(';');

        for (var i = 0; i < rowArray.length-1; i++) 
        { 
            cellArray[i] = rowArray[i].split(':');
            row += '<div>' + '<span>' + cellArray[i][0] + '</span>' + '<span>' + cellArray[i][1] + '</span>' + '</div>'                                    

        }

        row = '<div>' + row + '</div>';
        editor.insertHtml(row);
    } 

Does not want to be inserted as html in CKeditor. Why? Thanks for help.