Genesis Block generation failed...

What I did so far.

1. download newest source.
2. change simple parameters only. (like block generation time, etc)
and change chainparams.cpp 's genesisoutputScript = CScript() << ParseHex("04.....)
's value by download and run [ cat genesiscoinbase.hex ]

3. download Github's GenesisH0
4. Run GenesisH0 with
python genesis.py -a scrypt -z "Now is 2018-02-20"

5. It says merkle hash : be766....
I input this to chainparams.cpp's Main & Testnet's assert(genesis.hashMerkleRoot == unit256s("0xbe766............"));

and it says pubkey : 04678a.....
where this pubkey should be written at source?

and it says time : 1519....
I input this to chainparams.cpp's Main's genesis = CreateGenesisBlock(1519..... this's first parameter)

and it says nonce : 170938
I input this to genesis = CreateGenesisBlock(1519..... , 179038, this's 2nd parameter)

and genesis hash : 215c...........
I input this to assert(consensus.hashGenesisBlock == unit256s("0x215c............"));

6. repeat 4.

7. repeat 5. to chainparams.cpp's Testnet part.

8. add line printf at

consensus.hashGenesisBlock = genesis.GetHash();
printf("genesis.GetHash = %s\n", genesis.GetHash().ToString().c_str());
assert(consensus.hashGenesisBlock == uint256("0x215c......

9. At terminal, 'make', 'make clean', 'sudo make install'

10. run ./bitcoind

And result is
genesis.GetHash = 7fa7c349.......
bitcoind : chainparams.cpp : 124 : CMainParams::CMainParams(): Assertion 'consensus.hashGenesisBlock == uint256S("0x215c...)' failed.
Aborted (core dumped)

What did I wrong? and how to fix?

Thanks a lot...