Cannot add ip6 elements to a named set

[Matt <matt-nft@xxxxxxxxxxxx>]

Dear nft team,
with ip4 i can create my set and add elements no problem, sample:

table ip filter_v4 {
   set my_drop {
     type ipv4_addr;
     flags timeout
   }
 ...
 ...
}
Then adding a element to it, works all good:
# nft add set filter_v4 my_drop \{type ipv4_addr \; flags timeout \; 
elements=\{192.168.1.1 timeout 60s\} \;\}


But I would like to do the same with ip6:

table ip6 filter_v6 {
   set my_drop {
     type ipv6_addr;
     flags timeout
   }
 ...
 ...
}

However, doing the same with ipv6 doesn't work for me:
#nft add set filter_v6 my_drop \{type ipv6_addr \; flags timeout \; 
elements=\{fda5:2c8a:af4c:a95e::64 timeout 60s\} \;\}

Returns
Error: Could not process rule: No such file or directory
add set filter_v6 my_drop {type ipv6_addr ; flags timeout ; 
elements={fda5:2c8a:af4c:a95e::64 timeout 60s} ;}
        ^^^^^^^^^


Any idea whats wrong?
Thx
Matt