Unrecognized urn_type in ge_urn: must be 'stores' to use a metric store

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GE 0.15.33
I am following the guide - How to create Expectations that span multiple Batches using Evaluation Parameters

However I get Unrecognized urn_type in ge_urn: must be 'stores' to use a metric store and think I am missing something somewhere.

After running:

eval_param_urn = 'urn:great_expectations:validations:expectation_suite:expect_table_row_count_to_be_between.result.observed_value'
downstream_validator.expect_table_row_count_to_equal(
   value={
      '$PARAMETER': eval_param_urn,
   }
)
downstream_validator.save_expectation_suite(discard_failed_expectations=False)
results = context.run_checkpoint(
  checkpoint_name="my_checkpoint"
)

In my expectation suite:

...
    {
      "expectation_type": "expect_table_row_count_to_equal",
      "kwargs": {
        "value": {
          "$PARAMETER": "urn:great_expectations:validations:expectation_suite:expect_table_row_count_to_be_between.result.observed_value"
        }
      },
      "meta": {}
    }