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Call a smart contract function

The transaction calls a function of the given smart contract instance, giving it functionParameters as its input. The call can use at maximum the given amount of gas – the paying account will not be charged for any unspent gas.
If this function results in data being stored, an amount of gas is calculated that reflects this storage burden.
The amount of gas used, as well as other attributes of the transaction, e.g. size, and number of signatures to be verified, determine the fee for the transaction – which is charged to the paying account.
Transaction Signing Requirements
  • The key of the transaction fee-paying account
Transaction Fees
  • Please see the transaction and query fees table for the base transaction fee
  • Please use the Hedera fee estimator to estimate your transaction fee cost
Method
Type
Description
Requirement
setContractId(<contractId>)
ContractID
The ID of the contract to call.
Required
setFunction(<name, params>)
String, ContractFunctionParameters
Which function to call and the parameters to pass to the function.
Required
setGas(<gas>)
long
The maximum amount of gas to use for the call.
Required
setPayableAmount(<amount>)
Hbar
Number of hbars sent (the function must be payable if this is nonzero)
Optional
Java
JavaScript
Go
//Create the transaction
ContractCreateTransaction transaction = new ContractExecuteTransaction()
.setContractId(newContractId)
.setGas(100_000_000)
.setFunction("set_message", new ContractFunctionParameters()
.addString("hello from hedera again!"))
//Sign with the client operator private key to pay for the transaction and submit the query to a Hedera network
TransactionResponse txResponse = transaction.execute(client);
//Request the receipt of the transaction
TransactionReceipt receipt = txResponse.getReceipt(client);
//Get the transaction consensus status
Status transactionStatus = receipt.status;
System.out.println("The transaction consensus status is " +transactionStatus);
//v2.0.0
//Create the transaction
const transaction = new ContractExecuteTransaction()
.setContractId(newContractId)
.setGas(100_000_000)
.setFunction("set_message", new ContractFunctionParameters()
.addString("hello from hedera again!"))
//Sign with the client operator private key to pay for the transaction and submit the query to a Hedera network
const txResponse = await transaction.execute(client);
//Request the receipt of the transaction
const receipt = await txResponse.getReceipt(client);
//Get the transaction consensus status
const transactionStatus = receipt.status;
console.log("The transaction consensus status is " +transactionStatus);
//v2.0.0
//Create the transaction
transaction, err := hedera.NewContractExecuteTransaction().
SetContractID(newContractID).
SetGas(100000000).
SetFunction("setMessage", contractFunctionParams)
//Sign with the client operator private key to pay for the transaction and submit the query to a Hedera network
txResponse, err := transaction.Execute(client)
if err != nil {
panic(err)
}
//Request the receipt of the transaction
receipt, err := txResponse.GetReceipt(client)
if err != nil {
panic(err)
}
//Get the transaction consensus status
transactionStatus := receipt.Status
fmt.Printf("The transaction consensus status %v\n", transactionStatus)
//v2.0.0