# JavaScript Algorithms and Data Structures Projects - Cash Register

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Your code so far

Hi please advice where i have gone wrong

https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/javascript-algorithms-and-data-structures-projects/cash-register

``````function checkCashRegister(price, cash, cid) {
let change = cash*100 - price*100;
let cidTotal = 0
for (let elem of cid){
cidTotal += elem[1]*100
}
if(change > cidTotal){
return {status: "INSUFFICIENT_FUNDS", change: []}
}else if (change === cidTotal){
return {status: "CLOSED", change:cid}
}else{
let answer = []
cid=cid.reverse()
let moneyUnits = {"ONE HUNDRED":10000, "TWENTY": 2000,"TEN": 1000, "FIVE": 500, "ONE": 100, "QUARTER": 25,"DIME":10,"NICKEL": 5, "PENNY":1};
for(let elem of cid){
let holder = [elem[0],0]
elem[1]=elem[1]*100
while (change >= moneyUnits[elem[0]] && elem[1] > 0){
change -= moneyUnits[elem[0]]
elem[1] -= moneyUnits[elem[0]]
holder -= moneyUnits[elem[0]]/100
}
if (holder[1]>0){
}

if (change > 0){ return {status: "INSUFFICIENT_FUNDS", change: []}

}
return{status: "OPEN", change: [answer]

}

}
}

}

checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]);

``````

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Challenge: JavaScript Algorithms and Data Structures Projects - Cash Register

Link to the challenge:

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``````  //holder -= moneyUnits[elem[0]]/100
holder[1] += moneyUnits[elem[0]] / 100;

``````

it is subtracting the value of the currency unit from the `holder` array instead of adding it

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