Issues Extracting Updated At Date for CRM Integration

Hey. Not sure if it’s a bug, but I’m trying to extract the date from the “Updated at” column. I need this to push this date to my CRM. The problem:

I don’t see the column when I build the formula (like with /updated at) - even I can see it in my table
And when I type it manually, the formula doesn’t work.

Can you help me figure it out? or find a workaround? please I can extract the data from the Created At column but not the updated at column.