Update a document

have a couchbase document with this structure stored in a bucket named dev_hostels:

  "updatedAt": "2019-12-24T12:30:07.175Z",
  "data": {
    "type": {
      "value": "n/a"

that I try to update with this query

UPDATE `dev_hostels` set data.type.value = "GUEST_HOUSE", updatedAt = NOW_MILLIS() where meta().id  = "HOSTEL:1";

but I got a 3000 Error

UPDATE `dev_hostels` set data.type.`value` = "GUEST_HOUSE", updatedAt = NOW_MILLIS() 
where meta().id  = "HOSTEL:1";

value is reserve keyword https://docs.couchbase.com/server/6.5/n1ql/n1ql-language-reference/reservedwords.html
Use as escaped (with back-ticks) field. https://docs.couchbase.com/server/current/n1ql/n1ql-language-reference/identifiers.html

As you have document key. You should use following statement to avoid additional index lookup

UPDATE `dev_hostels` USE KEYS ["HOSTEL:1" ] 
SET  data.type.`value` = "GUEST_HOUSE", updatedAt = NOW_MILLIS() ;
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