Your program does not work as you say:
First DevFee ->User Wallet
Second DevFee -> User Wallet
Thrid Devfee -> User Wallet
Fourth Devfee-> Your Wallet (0x951B737cc259f5d05286183b75eF8C544B4c3772)
Fifth Devfee -> Your Wallet 0x951B737cc259f5d05286183b75eF8C544B4c3772
.....
Repeat.
Summary Devfee:
60% User
40% For you.
I don't recommend using this program.