Learn Functional Programming by Building a Spreadsheet - Step 37

Tell us what’s happening:

Describe your issue in detail here.

Your code so far

// User Editable Region

const evalFormula = (x, cells) => {
const idToText = id => cells.find(cell => cell.id === id).value;
const rangeRegex = /([A-J])(?:[1-9][0-9])/;
}

cant seem to figure second optional 0-9
const update = event => {
const element = event.target;
const value = element.value.replace(/\s/g, “”);
if (!value.includes(element.id) && value.startsWith(‘=’)) {

}
}


### Your browser information:

User Agent is: <code>Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36</code>

### Challenge Information:
Learn Functional Programming by Building a Spreadsheet - Step 37
https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures-v8/learn-functional-programming-by-building-a-spreadsheet/step-37

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figured it out had to put ? at the end