Google Ads API: how to remove cpcBid from keyword/ad group criterion (Python)

[Mat]

Hi,

how can we remove a cpcBid from a keyword (or any 
other ad_group_criterion), to make the adGroup cpcBid the source of the 
cpcBid, using the Google Ads API with the Python library?

In the legacy AdWords API, we used to set the criterion cpcBid = 0, but 
this does not seem to work anymore.

Based on this example 
<https://developers.google.com/google-ads/api/docs/samples/update-keyword#python>,
 
I've tried several approaches, but none ot them worked:

ad_group_criterion.cpc_bid_micros.value = 0:

errors {
  error_code {
    field_error: INVALID_VALUE
  }
  message: "The field\'s value is invalid."
  trigger {
    int64_value: 0
  }
  location {
    field_path_elements {
      field_name: "operations"
      index {
        value: 12
      }
    }
    field_path_elements {
      field_name: "update"
    }
    field_path_elements {
      field_name: "cpc_bid_micros"
    }
  }
}



ad_group_criterion.cpc_bid_micros.value = int():

errors {
  error_code {
    field_error: INVALID_VALUE
  }
  message: "The field\'s value is invalid."
  trigger {
    int64_value: 0
  }
  location {
    field_path_elements {
      field_name: "operations"
      index {
        value: 12
      }
    }
    field_path_elements {
      field_name: "update"
    }
    field_path_elements {
      field_name: "cpc_bid_micros"
    }
  }
}


ad_group_criterion.cpc_bid_micros.value = None:

TypeError: None has type NoneType, but expected one of: int, long


Can you help me?

Regards
Mat

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