Calculate an Aggregation based on MaxValue

Hi everyone

I had the situation to get the Max Value out of a table per date per dimension X

ryan_mayu helped me with a solution.

https://community.powerbi.com/t5/Desktop/MaxDate-per-Value/m-p/1774703/highlight/true#M695104 

But now I am facing the situation that I cannnot aggreagate this max values to get an overall picture (e.g. What is the average of all maxvalues per item).

Can anyone support please.