Can't create immortal transaction

[leonardocustodio]

Hello guys,

When doing the following:

const unsigned = methods.balances.transferKeepAlive(
		{
			value: '1000000000000000000',
			dest: { id: '5DNs2sarEnjif92dAqkkgkcKCzEL7VXYajopoKWDd2zjmsKH' }, // Bob
		},
		{
			address: deriveAddress(alice.publicKey, PolkadotSS58Format.polkadot),
			blockHash: genesisHash,
			blockNumber: 0,
			genesisHash,
			metadataRpc,
			nonce: 3, // Assuming this is Alice's first tx on the chain
			specVersion,
			tip: 0,
			transactionVersion,
		},
		{
			metadataRpc: metadataRpc,
			registry: registry,
			isImmortalEra: true,
		}
	);

I get the following error:

Error: createType(MortalEra):: Invalid data passed to Mortal era

Am I doing something wrong? Are we suppose to change other parts and not only the isImmortalEra arg?

[leonardocustodio]

Ok, I see, the error is actually in the next example line, in the decoding. We need to pass isImmortalEra to decoding too.
Though this seems a bit odd, I mean, how would I know that is an immortal transaction if I did not decode it yet? Anyway, closing the issue.

[TarikGul]

Yea this is a good point, I'll open up an issue to try and find a way to make the UX a little more fluid there. I think the original idea was the options that was used to create the tx would also be used as the means to decode it.