iRule table usage in FLOW_INIT event

Hi,

According to https://clouddocs.f5.com/api/irules/table.html

table command is valid for all events except RULE_INIT

Valid Events:

ALL, except RULE_INIT

I'm trying to use table command in FLOW_INIT event but always get empty value, while at CLIENT_ACCEPTED event the table return non empty value.

when FLOW_INIT {
  set srcip [IP::client_addr]
  set test_ip [table lookup -subtable "blacklist" $srcip] 
  log local0. "$srcip , table value: $test_ip"
}

log is "192.0.0.1 , table value: "

while same code in CLIENT_ACCEPTED event 

when CLIENT_ACCEPTED{
  set srcip [IP::client_addr]
  set test_ip [table lookup -subtable "blacklist" $srcip] 
  log local0. "$srcip , table value: $test_ip"
}

 log is "192.0.0.1 , table value: block"

Thanks