**Tell us what’s happening:**

Hi everyone, I’ve been stuck on this test for three days now. This is the code I wrote according to my idea, but it doesn’t run successfully. It only returns: Array [ “ONE HUNDRED”, 0 ] each time

I’m not quite sure what’s wrong, please help me.

Thank you all.

```
**Your code so far**
```

```
function checkCashRegister(price, cash, cid) {
var change=cash-price; //Change should be given
var sumCid=0; //How much money is in the cash register in total
var realChange=[]; //The final returned two-dimensional array of change
var unitNum=[0.01,0.05,0.1,0.25,1,5,10,20,100] //Denomination
var n=0; //Maximum number of change for the same denomination
for (let i=0;i<cid.length;i++) {
sumCid+=cid[i][1] //figure out sumcid
}
if (cash>sumCid) { //If you can't change it at the beginning, return to
return {status: "INSUFFICIENT_FUNDS", change: []};
}else if (cash===sumCid) { //If you can find the change directly, return
return {status: "CLOSED", change: [cid]};
}else if (cash<sumCid) { //If the total amount in the cash register can cover change
for (var i=unitNum.length - 1;i>=0;i--) { //Reverse traversal of par value arrays
if (change>=unitNum[i]&&change<=cid[i][1]) { //Find the denomination of change just greater than or equal to and the current denomination has that much change
for (let n=0;n<=(cid[i][1]/unitNum[i]);n++) { //Find the exact size of the n
//Change minus the most money you can find for the current denomination
return change=change-unitNum[i]*n;
}
}
return realChange.concat([cid[i][0],unitNum[i]*n])//Concatenate the denominations and values of the found change into a two-dimensional array.
}
}
else if (change===0) {
return {status: "OPEN", change: realChange}
}
}
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]]);
```

```
**Your browser information:**
```

User Agent is: `Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:95.0) Gecko/20100101 Firefox/95.0`

**Challenge:** Cash Register

**Link to the challenge:**