BGP, add ipv6 network error

hi everybody,

I have a Fortigate-100f (v6.4.2 build1723). When I try to add an ipv6 BGP network from GUI I get an "Invalid IPv6 Network Address".

If I use the cli and enter the below commands (IPs and AS are changed) I succeed, but when I return to GUI I can't see the ipv6 network I have added:

config router bgp     set as 55555     config network         edit 1             set prefix 111.111.111.111 255.255.255.224         next     end     config network6         edit 2             set prefix6 2000:2000:2000::/48         next     end  end

Could you please help?