insert table twice on same table, the second insert is not work

[黄祥]

is it possible to insert table twice on same table in web2py?

e.g.

modules/test_event.py

def after_insert_event(f, id, table):

time_stamp = current.request.now

client_ip = current.request.client

user_id = current.auth.user_id

origin = '%s/%s' % (current.request.controller, current.request.function)

mail_to = 'ad...@stifix.com'

messages = 'ID %s created in table %s by %s on %s at %s from %s' % (id, table, 

  user_id, time_stamp, 

  origin, client_ip)

# insert table event : worked

current.db.auth_event.insert(time_stamp = time_stamp, 

client_ip = client_ip, 

user_id = user_id, 

origin = origin, 

description = 'ID %s created in table %s' % (id, table) )

# mail

current.mail.send(mail_to, 

 messages, 

 messages)

# insert table event : not worked no error traceback occured, but the result is not expected

current.db.auth_event.insert(time_stamp = time_stamp, 

client_ip = client_ip, 

user_id = user_id, 

origin = origin, 

description = 'Email sent to %s ID %s created in table %s' % (mail_to, id, table) )

this code only work for the first insert, the second insert is not work (no error traceback occured, but the result is not expected.)
is there any way to achieve it using web2py way?

thanks and best regards,

stifan