fixed dbo generator

src/Generator/dbo.php.twig

     {
         $dbo = new {{ dbo_name.camel_upper }}();
 {% for column in columns %}
-        if (isset($json["{{ column.name.camel_upper }}"]) {
+        if (isset($json["{{ column.name.camel_upper }}"])) {
             $dbo->set{{ column.name.camel_upper }}($json["{{ column.name.camel_upper }}"]);
         }
 {% endfor %}