Mongodb add an element to an array in specific order - arrays

Question

I would like to push a new value to an array in a specific position but although I tried differents things I can do it. Can someone help me?
My document is:
{
"_id" : ObjectId("55528f000000000000000000"),
"contractId" : "55528f000000000000000000",
"field1": [
{
"name":"example",
"backendData": {
"map": {
"7552" : "RTEST",
"3511" : "TESTR",
"5312" : "JKTLE",
"5310" : "INVTS"
}
},
"data": {
"defaultOrder": [
"7552",
"3511",
"5312",
"5310"
]
}
}
]
}
I've tried with set, but I didn't find a way to add the element in the position I want, then I tried with push but it's not working. I did something like that:
db.collection.update({
"_id": ObjectId("55528f000000000000000000"),
},
{
"$push": {
"field1.$[i].data.$.defaultOrder": {
"$each": [
"9999"
],
"$position": 2
}
}
},
{
arrayFilters: [
{
"i.entities": {
$elemMatch: {
"name": "example"
}
}
}
]
})
And although it gives me a match it doesn't make any change
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 0 })
Expected outcome:
{
"_id" : ObjectId("55528f000000000000000000"),
"contractId" : "55528f000000000000000000",
"field1": [
{
"name":"example",
"backendData": {
"map": {
"7552" : "RTEST",
"3511" : "TESTR",
"5312" : "JKTLE",
"5310" : "INVTS"
}
},
"data": {
"defaultOrder": [
"7552",
"3511",
"9999",
"5312",
"5310"
]
}
}
]
}
Thank in advance

Answer 1

Please try this (edited both 2nd and 3rd parts):
db.collection.update({"_id": ObjectId("55528f000000000000000000")},
{"$push": {"field1.$[i].data.defaultOrder":
{"$each": ["9999"], "$position": 2}}},
{arrayFilters: [ { "i.name": "example" } ]})
See:
https://mongoplayground.net/p/8o57t4tlnm6