Are Nested values inside graphQLQueryArguments supported for Custom External References?

[adityakhapre]

apps/examples/function-mock-shop/functions/mockShop.ts

Line 24 in 4fa4bc7

graphQLQueryArguments: { id: '' },

I am implementing Custom External References in our org.
We do have the Premium license.

I am setting a value inside the field, which is a variables object alongside other properties, which I want to use in my query.
e.g.

// Assume other syntax and spelling are correct in these examples

// Field.tsx
sdk.field.setValue({
...other properties
.
.
variables: { where: 
{
    sys: {...}
}
 }
.
.
... other properties
})

I am using this value inside the fieldMappingHandler, as instructed in the Documentation, as follows -

const fieldMappingHandler: FieldMappingHandler = (event) => {
  
  const fields = event.fields.map(({ contentTypeId, field }) => ({
    contentTypeId,
    fieldId: field.id,
    graphQLQueryField: 'someCollection',
    graphQLQueryArguments: { where: '/variables/where' },
  }));

  // Return the mapping and the namespace.
  // The namespace is used to namespace the
  // GraphQL types from the third party API.
  return {
    namespace: 'MockShop',
    fields,
  };
};

But, this does not work.
I only get empty variables with my query when I inspect the function logs.
And thus, also in the actual response I do not get the correct results.