Yanislav, you can do that via Admin Area > Settings > User Settings > Avatar Settings section.

Yes, i know this but there maximum size is 150 and 250 i need avatar to be more bigger.

ow_system_plugins/admin/controllers/setting.php

 // avatar size Field
        $avatarSize = new TextField('avatarSize');
        $avatarSize->setRequired(true);
        $validator = new IntValidator(40, 150);
        $validator->setErrorMessage($language->text('admin', 'user_settings_avatar_size_error', array('max' => 150)));
        $avatarSize->addValidator($validator);
        $this->addElement($avatarSize->setLabel($language->text('admin', 'user_settings_avatar_size_label')));

        // big avatar size Field
        $bigAvatarSize = new TextField('bigAvatarSize');
        $bigAvatarSize->setRequired(true);
        $validator = new IntValidator(150, 250);
        $validator->setErrorMessage($language->text('admin', 'user_settings_big_avatar_size_error', array('max' => 250)));
        $bigAvatarSize->addValidator($validator);
        $this->addElement($bigAvatarSize->setLabel($language->text('admin', 'user_settings_big_avatar_s


There is a reason why max values are set this way. Most likely larger avatars just won't fit into look and feel of default Oxwall templates. So be aware that changing max. values might distort your website's design.

thx

and is possible to change the user questions permissions?

 I mean answer in the questions is maximum 31 but i need more...?!?

Yanislav, please do the search on the forum, this question has been discussed a bunch of times:
http://www.oxwall.org/forum/topic/379,
http://www.oxwall.org/forum/topic/18639,
http://www.oxwall.org/forum/topic/16895,
http://www.oxwall.org/forum/topic/15340.

ok, thx