Trying to update a subdocument in a parent document mongoose - node.js

Question

i am trying to update or remove a subdocument from a parent document using mongoose.
My code:
editSubscription(req, res) {
const token = req.headers.authorization;
jwt.verify(token, req.app.get('yourSecretKey'), function (err, payload) {
userModel.update({ _id: payload.user._id, "subscriptions._id": req.params.id }, { "$set": { "subscriptions.$": req.body } }, function (err, obj) {
console.log(obj)
})
})
}
The output of the console.log is
{ n: 0, nModified: 0, ok: 1 }
How should i do this? i know if its modified the nModified returns a 1. I can't find any docs on how to approach this or solve it and all the solutions here on stackoverflow i already tried, nothing is working.
A sample of a document in my collection:
id: '5db990daa05aa90de0c8b86b',
user:
{ role: 'User',
subscriptions: [
{ active: true,
_id: '5dbad05aaf232e2bdc033339',
name: 'Basic Fit',
price: 20,
paymentDate: '07-11-2020',
created: '2019-10-31T12:15:22.360Z',
updated: '2019-10-31T12:15:22.360Z' },
{ active: true,
_id: '5dbad2568bf56255a0f39bc7',
name: 'Netflix',
price: 10,
paymentDate: '07-11-2019',
created: '2019-10-31T12:23:50.141Z',
updated: '2019-10-31T12:23:50.141Z' } ]
],
_id: '5db990daa05aa90de0c8b86b',
fullname: 'Test naam',
email: 'test1#mail.com',
password:
'$2a$10$VzBnIcVraIRdmzy6rPHOX.7gGOXToTBNISLEfi429OfpRx02FxCaO',
birthDate: '02-12-1988',
created: '2019-10-30T13:32:10.276Z',
updated: '2019-10-30T13:32:10.276Z',
__v: 0 },
payload.user._id == the verified logged in user ID
req.params.id is supposed to be the subscriptionId im trying to edit

Answer 1

Try this:
editSubscription(req, res) {
const token = req.headers.authorization;
jwt.verify(token, req.app.get('yourSecretKey'), function (err, payload) {
userModel.update({ _id: ObjectId(payload.user._id), "subscriptions._id": ObjectId(req.params.id) }, { "$set": { "subscriptions.$": req.body } }, function (err, obj) {
console.log(obj)
})
})
}

Answer 2

I tried and im getting a 500 error response back..
When i remove the 'req.params.id' and i do it like this:
userModel.updateOne({ _id: payload.user._id }, { "$set": { "subscriptions.0.price":
req.body.price} }).then(user => {
console.log(user)
}).catch(err => {
console.log(err)
})
Then it works but since i have multiple items in an array i do not want to update only the first one..
I tried using a filter in the $set operator but im getting errors all over the place..