[Serusers] Problem with fr_inv_timer_avp

[Michel Zenone]

Hi!

Does somebody know why 'fr_inv_timer_avp' does nothing when I use it as
follow:
...
modparam("tm", "fr_inv_timer_avp", "inv_timeout")

modparam("avpops","avp_url","mysql://root@localhost/ser")
modparam("avpops","avp_table","avptimer")
# 'avptimer' is like 'usr_preferences'
...
avp_db_load("$ruri","inv_timeout/avptimer");

Actually I try to set a fr_inv_timer different from an user to another.
'avptimer' timer defines, for each users, their proper fr_inv_timer.

If somebody can help...
Thanks in advance,
Michel