_mint function for IERC20 Safemoon fork?

Greetings!

I am trying to implement a new function to the safemoon protocol i found on the web. You can find it here: https://github.com/safemoonprotocol/Safemoon.sol .

I am using remix to edit code.

So the function i am trying to add looks like this:

function mint(uint256 amount) public onlyOwner returns (bool) {
_mint(_msgSender(), amount);
return true;
}

When i try to compile it, i get an error looking sort of like this: (excluded line of error and name of project as it has no value)

declarationerror: Undeclared identifier. Did you mean “mint”? → _mint(_msgSender(), amount);

So i am struggeling here as i dont know whats wrong…

I tried to remove the underline before mint and deploy it. I only got a warning, but the result when deploying wasn’t as expected.

I may think this is due to the contract is IERC20 and not ERC20, but not sure about it?

Any help on this would be very appreciated!
Thank you in advance :slight_smile:

Here is bscscan info w/ verified contract if neccessary to have a look: https://bscscan.com/token/0x635484bbaadfb5834decc52cc0debf2c09c4c662