void main()
{
    //sanity check.  The maximum enterable name from chat window text entry
    //is 401 letters.  I recommend 32 letters as an upper limit, but 64
    //should also be safe.  You can also add a minimum if desired, but
    //I don't see the need for this.
    string sName = GetLocalString(OBJECT_SELF,"vulc_newname");
    int nMax = 32;

    //test string length against max allowable name characters,
    //clear name field and return TRUE if failed
    if(GetStringLength(sName)>nMax)
    {
        SetCustomToken(5689,IntToString(nMax));
        return;
    }
    SetCustomToken(5689,sName);
}