The Scenario
The weekly CRM sync just finished. Deal sizes changed, close dates slipped, a handful of accounts moved stages. All of it is correct in the Excel sheet the team maintains. None of it is reflected in Trello — the board your SDRs actually live in every day.
You updated the spreadsheet. Now someone has to update eighty cards.
The bad version:
- Open card one, click the Deal Value custom field, type the new number, click the Close Date field, change the date, click save.
- Close the card, find the next one in the list, repeat.
- Around card thirty, realize you're updating from an old tab of the spreadsheet.
Eighty cards, two custom fields each, three to four minutes per card — that's somewhere between three and six hours. Nobody budgeted that.
The Easy Way: One Prompt in SheetXAI
SheetXAI lives inside your Google Sheet and writes directly to Trello's custom fields. Give it a sheet with card IDs and updated values and it pushes every change without you opening a single card.
Your sheet needs card IDs in column A, new Deal Value in column B, and new Close Date in column C. Then:
For each row in this sheet, find the Trello card with the ID in column A and set its custom field "Deal Value" to column B and "Close Date" to column C. Write "updated" into column D when done.
Or if you're pushing a single numeric field across all rows:
Read card IDs from column A and updated priority scores from column B of this sheet. For each row, update the custom field "Priority Score" on the corresponding Trello card. Write the result into column C.
What You Get
- Every card in the sheet updated with the new custom field values from the matching columns.
- Column D (or your chosen writeback column) populated with "updated" for each successful write.
- Cards where the ID wasn't found or the field name didn't match reported in the writeback column.
- No cards touched that weren't in the sheet — the update is scoped exactly to your rows.
What If the Data Is Not Quite Ready
The sheet has card names, not card IDs
For each row in this sheet, search the Trello board "Sales Pipeline" for a card whose name matches column A. If found, update its custom field "Deal Value" to column B and "Close Date" to column C. Write the resolved card ID into column D and "updated" into column E.
Name-based lookup is slower but saves you from having to pre-populate an ID column.
Some rows are flagged as "no change" and should be skipped
For each row in this sheet where column D is not "no change," find the Trello card with the ID in column A and update its custom fields "Stage" (column B) and "Deal Value" (column C). Write "updated" or "skipped" into column E.
Conditional writes mean you can run the same sheet week over week by just changing the flag column.
The custom field type is a dropdown and your values are display labels, not option IDs
For each row in this sheet, find the Trello card with the ID in column A. Update its dropdown custom field "Stage" to the option matching the text in column B. Resolve the option ID from the board's field definition before writing.
SheetXAI resolves the option ID from the label — you don't have to pre-build a mapping table.
Validate, update, and audit in one operation
For each row in this sheet, fetch the current value of the "Deal Value" custom field on the Trello card with the ID in column A. Write the current value into column D. Then update the field to the value in column B. Write "updated" or any error into column E.
One prompt captures before-and-after in the same pass — you have a full audit trail without running a separate export first.
Reading the current value before writing it means you can verify the update landed exactly where you expected, without opening Trello.
Try It
Open any Google Sheet with a column of Trello card IDs and Get the 7-day free trial of SheetXAI to push your updated custom field values in one prompt. To pull the current values out first, see the export card custom fields spoke, or return to the Trello integration hub for the full library.