Remove connection

RouterOS Scripting
1 
/ip firewall connection
:global arrConnections [find dst-address~"^91.227.9[2-5]\\.*" and reply-dst-address~"10.104.255.117:"];
:foreach i in=$arrConnections do={
  :do {
  :if ([:typeof $i] = "id") do={
  remove $i;
  :log warning ($i." for ".[/ip/firewall/connection/get [find where .id=$i] src-address ]." is src-address");
  :log warning ($i." for ".[/ip/firewall/connection/get [find where .id=$i] dst-address ]." is dst-address");
  }
} on-error={:log warning ("Fail on ".$i)}
}

Hello everyone! I’m trying to find the solution for 2 weeks .
When the script is running some connection is was disappeared and I get the error “script error: no such item (4)” on remove command (because I did not see ID connection warning)
and script is stopping.
On-error did not to work properly.
I tryed a lot of variants, but I get the error- “no such item”:

  1. /ip/firewall/connection/remove [find dst-address~…
  2. :foreach i in=[ ip/firewall/connection/find where dst-address~…
  3. :foreach i in=[ ip/firewall/connection/find where dst-address~… and timeout>30
  4. :foreach i in=[/ip/firewall/connection/find dst-address~… ] do={
    :if ([/ip/firewall/connection/get [find where .id=$i]]) do={…

Please help me how to ignore the error or some other variants.
I read that somebody on\off connection tracker but this method is not good for me.
Thanks a lot, Marat