google_ads_client = self.google_ads_api_client(self.refresh_token, self.login_customer_id)
agc_service = google_ads_client.get_service('AdGroupCriterionService')
agc_operation = google_ads_client.get_type('AdGroupCriterionOperation')
label_service = google_ads_client.get_service('LabelService')
#update zero conversion keyword with labe 'paused by zc'
ad_group_criterion = agc_operation.update
ad_group_criterion.resource_name = agc_service.ad_group_criterion_path(customer_id, ad_group_id, criterion_id)
ad_group_criterion.labels = label_service.label_path(customer_id, label_id)
google_ads_client.copy_from( agc_operation.update_mask,
protobuf_helpers.field_mask(None, ad_group_criterion._pb),
)