Cell formula on iterated table not working correctly

[oscarsinuco]

When using something similar to what is done in the template called test-formula.xlsx (https://github.com/optilude/xlsx-template/blob/master/test/templates/test-formula.xlsx) it does not calculate the result for all iterated rows, in fact it only does it for the first row, how could this unexpected behavior be solved?

the data sent is as follows:
{
"data": [
{
"name": "John",
"quantity": 56,
"unitCost": 1000
},
{
"name": "Jane",
"quantity": 78,
"unitCost": 1000
},
{
"name": "Joe",
"quantity": 100,
"unitCost": 1000
},
{
"name": "Jill",
"quantity": 100,
"unitCost": 1000
},
{
"name": "Jack",
"quantity": 100,
"unitCost": 1000
}
]
}