Date definition in Alerts

[GantelineGergely]

Dear Qlik Community!

We have a BI table which contains sales data with negative margin. Our database is refreshed every morning IF there is new data available.

I would like to setup an Alert with the following definition:

- please send me an Alert IF the data of yesterday shows negative margin

How can I define "yesterday" in my Alert?

Thank you in advance

Gergely