How to use parameters correctly in Transactional Cypher HTTP - neo4j

Question

I'm a bit stuck. I'm trying to use parameters in my http request in order to reduce the overhead but I just can't figure out why this won't work:
{
"statements" : [ {
"statement" : "MATCH (n:Person) WHERE n.name = {name} SET n.dogs={dogs} RETURN n",
"parameters" : [{
"name" : "Andres",
"dogs":5
},{
"name" : "Michael",
"dogs":3
},{
"name" : "Someone",
"dogs":2
}
]
}]
}
I've tried just opening a transaction with a STATEMENT and feeding the separate 'rows' in as PARAMETERS on subsequent transactions before I /COMMIT, but no joy.
I know that multiple nodes can be created in a similar from the examples in the manual.
What am I missing?

Answer 1

I've since modified an answer from this post, which seems to work by using a FOREACH statement to allow for multplie 'sets' of parameters.
{
"statements" : [
{
"parameters": {
"props": [
{
"userid": "177032492760",
"username": "John"
},
{
"userid": "177032492760",
"username": "Mike"
},
{
"userid": "100007496328",
"username": "Wilber"
}
]
},
"statement": "FOREACH (p in {props} | MERGE (user:People {id:p.userid}) ON CREATE SET user.name = p.username) "
}
]
}

Answer 2

You can also use UNWIND for this case :
The statement :
UNWIND props as prop
MERGE (user:People {id: {prop}.id}) // and the rest of your query
The parameters :
{"props":[ {"id": 1234, "name": "John"},{"id": 4567, "name": "Chris"}]}
This is what is used on Graphgen to load the generated graphs in a local database from the webapp. http://graphgen.neoxygen.io