A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
Hi Eduardo González (eduardo.gonzalez),
I go through the post carefully, based on Excel version build you share with us, it seems that you are using Excel in Semi-Annual Enterprise Channel, Right? If this is true, you may not get the Lambda Function because the feature is not released to that update Channel yet, it is now available in Excel Version 2202: February 28 in Current Channel or later version, and Excel if you have joined Office insider program.
For more information: New LAMBDA functions available in Excel (office.com)
Best Regards,
Clark