doubt in the libray things!!

[Arijit018]

Hello Guys,
I am in Lesson 4.

 //SPDX-License-Identifier: MIT
pragma solidity ^0.8.7; //0.8.12
import "./PriceConverter.sol";
contract FundMe {
  uint256  minimumUSD = 50 * 1e18;
   address[] public funders;
   mapping(address => uint256) public addressToAmountFunded;
    function fund() public payable {
      require(msg.value.getConversionRate()) >= minimumUSD, "Didn't send enough!!") ;
      funders.push(msg.sender);
      addressToAmountFunded[msg.sender] =msg.value;
    }
}

in the code The msg.sender.getConversionRate() gives error !!

can anyone please solve this??

[igrs08]

Hi! You forgot to add this code :

contract FundMe{
using PriceConverter for uint256; //ADD THIS!!!

[Arijit018]

Thanks!!