Bar chart measure problem

[EliasGPS]

So i'm making a dashboard about forest area.

I want to show the top 10 countries with there highest foreast area loss. I already made a bar chart where i show the top 10 countries with the most foreast area (in the screenshot you can find an example). And i also made a line chart where i can see the evolution of a specific country in a timeperiod from 2000 - 2020. Now i want to make another bar chart where i can show the top 10 countries with the most forest area loss. The problem is only in my measure. i aldready made something like this:

• Avg({< [Series Name] = {'AG_LND_FRSTN - Forest area (thousands of hectares)'}, Year = {'2020'} >} Value)
  - Avg({< [Series Name] = {'AG_LND_FRSTN - Forest area (thousands of hectares)'}, Year = {'2000'} >} Value)

but i get no result. 

If you need more information don't hesistate to ask for more

Thanks for any help!

[Somasundaram · Accepted solution]

=Avg({< [Series Name] ={"=Rank(avg(Value))<=10"}  >} Value)