map visual controls changed?

I created a Power BI report in the Nov 2018 version and recently updated to Jul 2019 (2.71.5523.941).

In the Nov 2018 version, I created a measure "Log Total" = LOG10([Total]) to better show relative sizes of the bubbles on the standard built-in Map visual (the 1st place location was over twice the 2nd place location).  However, since upgrading to Jul 2019, I can't find the setting on the Map visual where I put that measure. I don't think I kept a Nov 2018 version of the report to be able to reference the exact name of the setting where I put the LOG10 measure.

Any help appreciated

Thanks

David