I'm trying to add the max cpc bid in keyword creating level to prevent adwords use the default cpc of adgroup but unfortunately I can't find away to do that :
// Create the keyword.
Keyword keyword = new Keyword();
keyword.text = KW;
keyword.matchType = KeywordMatchType.BROAD;
// Create the biddable ad group criterion.
BiddableAdGroupCriterion keywordCriterion = new BiddableAdGroupCriterion();
keywordCriterion.adGroupId = AG_ID;
keywordCriterion.criterion = keyword;
// Optional: Set the user status.
keywordCriterion.userStatus = UserStatus.ENABLED;
// Create the operations.
AdGroupCriterionOperation operation = new AdGroupCriterionOperation();
operation.@operator = Operator.ADD;
operation.operand = keywordCriterion;
operations.Add(operation);