UpdateMetadataAccount not working

[askindus]

I did not find an example of how exactly to use UpdateMetadataAccount correctly and tried it out.

In MetadataProgramData.cs Line 171 https://github.com/bmresearch/Solnet.Metaplex/blob/1e645368b02f94081b2b0b576b047ffd61d20df1/Solnet.Metaplex/MetadataProgramData.cs#L171

should maybe be

writer.Write( (byte) MetadataProgramInstructions.Values.UpdateMetadataAccount );

instead of

writer.Write( (byte) MetadataProgramInstructions.Values.CreateMetadataAccount );

? I tried it out using

var tx = MetadataProgram.UpdateMetadataAccount(mintMetadataPublicKey, updateAuthority, updateAuthority, new MetadataParameters()
            {
                creators = new List<Solnet.Metaplex.Creator>()
                  {
                       new Solnet.Metaplex.Creator(updateAuthority, 100)
                  },
                name = "customname",
                sellerFeeBasisPoints = 200,
                symbol = "",
                uri = "customurl"

            }, false);

var blockHash = _client.GetRecentBlockHash();
byte[] TX1 = new TransactionBuilder()
                .SetRecentBlockHash(blockHash.Result.Value.Blockhash)
                .SetFeePayer(wallet.Account)
                .AddInstruction(tx)
                .Build(new List<Account> { wallet.Account });

                var txSim = _client.SimulateTransaction(TX1);

and I get following error:

{"jsonrpc":"2.0","result":{"context":{"slot":99070261},"value":{"accounts":null,"err":{"InstructionError":[0,"InvalidError"]},"logs":["Program metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s invoke [1]","Program log: Error: BorshIoError","Program metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s consumed 3732 of 200000 compute units","Program metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s failed: program returned invalid error code"]}},"id":3}

What I'm doint wrong and could you please share an working example?

[mariomatic]

I don't think you are doing anything wrong + you are correct on the bug, it's the wrong instruction enum. I'm working on a example, hope to merge very soon.