const myMainScript = new Script(ScriptSum.bytecode, ScriptSum.abi, wallet);
 
const tx = myMainScript.functions.main(argument);
 
// Set the call parameters
tx.callParams({ gasLimit: 7500 });
 
// Get the entire transaction request prior to
const txRequest = await tx.getTransactionRequest();
 
// Get the transaction ID
const txId = await tx.getTransactionId();
 
// Retrieve the value of the call and the actual gas used
const { waitForResult: waitForActualGasUsed } = await tx.call();
const { value: valueOfActualGasUsed, gasUsed: gasUsedOfActualGasUsed } =
  await waitForActualGasUsed();