Update Metadata

Set an existing key with a different value to update metadata. Action 1 Set transaction metadata key/value pair as custom_tx_id and xyz123.

exports.onExecutePostLogin = async (event, api) => {
  api.transaction.setMetadata('custom_tx_id', 'xyz123');
};

Action 2 Log the key as custom_tx_id and the value as xyz123. Then, set custom_tx_id to abc456 to log again with the latest value for custom_tx_id in the transaction metadata.

exports.onExecutePostLogin = async (event, api) => {
  console.log('custom_tx_id', event.transaction?.metadata?.custom_tx_id);
  /* Outputs "custom_tx_id xyz123" */

  api.transaction.setMetadata('custom_tx_id', 'abc456');

  console.log('custom_tx_id', event.transaction?.metadata?.custom_tx_id);
  /* Outputs "custom_tx_id abc456" */
};

Action 3 Log the abc456 value for custom_tx_id.

exports.onExecutePostLogin = async (event, api) => {
  console.log('custom_tx_id', event.transaction?.metadata?.custom_tx_id);
  /* Outputs "custom_tx_id abc456" */
};

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