How use Trie.put

[SvyatobatkoVlad]

I found an answer from you here. Thank you

How to work with type record

let bindings aren’t mutable/updateable, but var bindings are. So either change to: var version : Nat32 = 1; // use var for a mutable/updatable variable ... ... version := exists.version; // use := for assignment (and use := for assignment/update). Or use a second let in the case: case(?exists) { let version = exists.version; // inserted let D.print(debug_show(exists.version)); D.print(debug_show(version)); }; Hope that helps! Claudio