public boolean addGroupsField(String fieldName, String fieldPrettyName, int size) { if (get(fieldName) == null) { GroupsClass groups_class = new GroupsClass(); groups_class.setName(fieldName); groups_class.setPrettyName(fieldPrettyName); groups_class.setSize(size); groups_class.setMultiSelect(true); groups_class.setObject(this); put(fieldName, groups_class); return true; } return false; }