Use $ne operator on object field in Atlas Trigger Match

MongoDB Atlas Atlas Triggers & Functions
1

Hi,
I’m trying to use the $ne operator on an object field in an Atlas Trigger Match expression, but without success. After reading this topic, i tried the following match expressions:

``
{
“fullDocumentBeforeChange.hospitalization.discharge_date”: null,
“updateDescription.updatedFields.hospitalization.discharge_date”: {
“$ne”: 0
}
}

{
“fullDocumentBeforeChange.hospitalization.discharge_date”: null,
“updateDescription.updatedFields.hospitalization.discharge_date”: {
“$ne”: 0
}
}


The first one never executes, and second one always executes even if  `{ hospitalization: { discharge_date: 0 } } `. 

Basically, what am i doing wrong here? If "hospitalization" was a simple field instead of an object something like this would work perfectly:

{
“fullDocumentBeforeChange.hospitalization”: null,
“updateDescription.updatedFields.hospitalization”: {
“$ne”: 0
}
}


Thank you!
2

(correction of the original text)

Hi,
I’m trying to use the $ne operator on an object field in an Atlas Trigger Match expression, but without success. After reading this topic, i tried the following match expressions:

{
  "fullDocumentBeforeChange.hospitalization.discharge_date": null,
  "updateDescription.updatedFields.hospitalization.discharge_date": {
      "$ne": 0
  }
}

{
  "fullDocumentBeforeChange.hospitalization.discharge_date": null,
  "updateDescription.updatedFields.hospitalization.discharge_date": {
      "$ne": 0
  }
}

The first one never executes, and second one always executes even if { hospitalization: { discharge_date: 0 } } .

Basically, what am i doing wrong here? If “hospitalization” was a simple field instead of an object something like this would work perfectly:

{
  "fullDocumentBeforeChange.hospitalization": null,
  "updateDescription.updatedFields.hospitalization": {
      "$ne": 0
  }
}

Thank you!