const MyContract = web3.eth.contract(MyContractABI)
  myContract = MyContract.at(contractAddress)

myContract.functionOne(addressParamater, function(err, res) {
    console.log(res)
  });

myContract.functionTwo(addressParamater, function(err, res) {
    console.log(res)
  });

Unhandled Rejection (Error): invalid address

web3.isAddress(addressParamater);