How can I modify nodeAffinity in gatekeeper?

[dimm0]

I'm trying to write a ModifySet to modify a nodeAffinity. I have this deployed as a pod:

spec:
  affinity:
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
        - matchExpressions:
          - key: nvidia.com/gpu.product
            operator: NotIn
            values:
            - NVIDIA-TITAN-RTX

and I want it to become:

spec:
  affinity:
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
        - matchExpressions:
          - key: nvidia.com/gpu.product
            operator: NotIn
            values:
            - NVIDIA-TITAN-RTX
          - key: "topology.kubernetes.io/zone"
            operator: In
            values:
            - "my-topology-zone"

If there are multiple matchExpressions, I want to add to all.

What should I put in location?

  location: "spec.affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms.matchExpressions[]"

This doesn't work. Glob in square brackets doesn't work either. No brackets doesn't work.