were you able to change YOUR nickname through this lines?
if (item.name_str != "" && item.Other) { name_tag.textContent = "other-name"; }
if (item.name_str != "" && name_tag && item.Other) { name_tag.innerHTML = "other-name"; }
but why want you to change the OTHER nickname to something? i mean.. if you do so... you won't know who you're writing to anymore because all of them will have the same nickname?! o.O