How can I match Winning Numbers to Users Numbers?

Question

I'm trying to match users inputted numbers to match an array(winning numbers) for a lottery game but I'm getting errors : How can I solve this?

"undeclared identifier"

uint8[] public numbers; // all numbers being stored in this array

mapping (uint8 => address payable[]) playersByNumber;

Function of setting the winning number.

function setWinNum(uint8 num1,uint8 num2,uint8 num3,uint8 num4,uint8 num5) public onlyOwner returns (uint8[5] memory ){

           uint8[5] memory numsFixed = [num1, num2,num3,num4,num5];
           //  selectedNumber = num; // this works for single number.
           
   return numsFixed;

   }

Function to assign winning numbers.

function determineWinner() public {
        require(msg.sender == owner);
        require(state == LotteryState.SecondRound, "Admin please set to second round");
        state = LotteryState.Finished;

     uint8[5] memory winningNumbers = setWinNum(numsFixed); -- says undeclared identifier
    
   // uint8 winningNumber = setWinNum(selectedNumber); works for single number.
   


         officialWinner(winningNumbers[]);

     selfdestruct(owner);
    }

Function to distribute winnings

function officialWinner(uint8 winningNumber) private returns ( uint256 ) {
               uint winnerCount = playersByNumber[winningNumber].length;
               
         //           require(winnerCount == 1);

         if (winnerCount < 0){
           ab;
         }

// so if theres winners distribute the money
         if (winnerCount > 0) {

             uint256 balanceToDistribute = address(this).balance/(2*winnerCount);// this gets the contract balance , divide 2 becase its only giving half the bal. w/ the haf balnce x winners

                 for (uint i = 0; i<winnerCount; i++) {
                     require(i==0);
            playersByNumber[winningNumber][i].transfer(balanceToDistribute);
           lotteryHistory[lotteryId] =  playersByNumber[winningNumber][i];
         
           address winner =  playersByNumber[winningNumber][i]; 
             lastWinner = winner;
             lastWinningAmount[winner] = balanceToDistribute;
              lastWinnerAmount=  lastWinningAmount[winner];  
       
           } 

Answer 1

Your are calling 'setWinNum(numsFixed)' inside of determineWinner(), but in this context, 'numsFixed' doesn't exist, you haven't declared it anywhere.

So the compiler tells you it's an 'undeclared identifier'.