private static String[] addContact(String[] tk)
{
Contact c;
if (tk.Length < 4)
{
return(str2arr("Missing arguments. Usage: addContact <extUserIDorEmail> <extServiceID> <nameContact>"));
}
c = sm.addContact(tk[1], int.Parse(tk[2]), tk[3]);
return(c == null?str2arr("Error!") : str2arr("Contact added with ID: " + c.contactID));
}