hello I added username at the registration and changed in user detail page from name to username.
but i have problem to change in item.php i tried with the following code
<?php $user = User::newInstance()->findByPrimaryKey( osc_item_user_id() ); echo $user['s_name']; ?>but do not change it
can you help me

s_username?

Thanks for the quick help
i have now changed in the file "item.php" the code
from
<?php if(osc_item_user_id() <> 0 and osc_item_user_id() <> '') { ?>
                    <a href="<?php echo osc_user_public_profile_url(osc_item_user_id()); ?>" title="<?php echo osc_esc_html(__('Check profile of this user', 'zara')); ?>">
                      <?php echo $c_name; ?>
                    </a>
                  <?php } else { ?>
                    <?php echo $c_name; ?>
                  <?php } ?>

to
<?php if(osc_item_user_id() <> 0 and osc_item_user_id() <> '') { ?>
                    <a href="<?php echo osc_user_public_profile_url(osc_item_user_id()); ?>" title="<?php echo osc_esc_html(__('Check profile of this user', 'zara')); ?>">
                      <?php $user = User::newInstance()->findByPrimaryKey( osc_item_user_id() ); echo $user['s_username'];  ?>
                    </a>
                  <?php } else { ?>
                    <?php $user = User::newInstance()->findByPrimaryKey( osc_item_user_id() ); echo $user['s_username'];  ?>
                  <?php } ?>

I hope the change is correctly done

Seems it is correct.

Thank you