function createNewContract(string memory name, string memory symbol, uint256 _maxSupply)
public onlyOwner returns (address) {
    EthnicXCoin ethnicX = new EthnicXCoin(name, symbol, _maxSupply, address(store));
    ethnicXQueue.push(address(ethnicX));
    emit etnXCreated(address(ethnicX));
    if (i == 0)
        i = _activateNextContract(i);
    return (address(ethnicX));
}

(async () => {
   var minterInstance = await minter.deployed();
   var etnXinstance =
             await etnX.at(await
   minterInstance.createNewContract.call("x","x",100000));
   console.log(await etnXinstance.address);
});