Unable to enable Set a maximum cost per click bid limit and set bid max using google adwords api - google-ads-api

Question

I have created google adCampaigns, adGroups, Keywords, Ads, Locations using Google Adwords API
but I am not able to set "Set a maximum cost per click bid limit" using api
I have used this code to set but it's not getting set
$operations = [];
// Create ad group with the specified ID.
$groupId = $adGroup->getId();
$adGroupNew = new AdGroup();
$adGroupNew->setId($groupId);
$cpcBidMicroAmount = intval($_GET['cpc']) * 1000000;
// Update the CPC bid if specified.
if (!is_null($cpcBidMicroAmount)) {
$bid = new CpcBid();
$money = new Money();
$money->setMicroAmount($cpcBidMicroAmount);
$bid->setBid($money);
$biddingStrategyConfiguration = new BiddingStrategyConfiguration();
$biddingStrategyConfiguration->setBids([$bid]);
$adGroup->setBiddingStrategyConfiguration($biddingStrategyConfiguration);
}
// Create ad group operation and add it to the list.
$operation = new AdGroupOperation();
$operation->setOperand($adGroupNew);
$operation->setOperator(Operator::SET);
$operations[] = $operation;
// Update the ad group on the server.
$adGroupService->mutate($operations);

Answer 1

$biddingScheme = new TargetSpendBiddingScheme();
$bidCeiling = new Money();
$bidCeiling->setMicroAmount($_GET['cpc'] * 1000000);
$biddingScheme->setBidCeiling($bidCeiling);
$spendTarget = new Money();
$spendTarget->setMicroAmount($_GET['cpc'] * 1000000);
$biddingScheme->setSpendTarget($spendTarget);
Do this at Campaign Level to set Bid Max Limit