I could be wrong but there does not seem to be a way to build an [ON CREATE ](https://neo4j.com/docs/cypher-manual/current/clauses/merge/#query-merge-on-create-on-match) query like this ```cypher MERGE (keanu:Person {name: 'Keanu Reeves'}) ON CREATE SET keanu.created = timestamp() RETURN keanu.name, keanu.created ``` This example taken from the [Neo4j Docs](https://neo4j.com/docs/cypher-manual/current/clauses/merge/#query-merge-on-create-on-match)