Filter and grouping problems on Pie chart

[MrMarshall]

The goal is to concatinate Group 300 and 400 in the Pie chart to the left so it becomes one "999" group.

The data is simple in my example: 

Group	Value	Year
100	100000	2018
100	600000	2019
200	250000	2018
200	300000	2018
300	100000	2019
400	50000	2018
500	200000	2019
500	100000	2018

I added a column that rewrites the Group codes (This works):

New Group = 
IF(
    CALCULATE(
        SUM(Table1[Value]),
        FILTER(Table1, Table1[Group] = EARLIER(Table1[Group] )
    )
) > 200000 ,Table1[Group] , 999 )

But the problem comes when I also need a slicer on the page. When using a column, it doesn't care about the Slicer values since it is in the report view. But I cannot use a measure since it cannot be the legend in a Pie chart. 

Prof of problem: When excluding 2019 in the slicer, the Group code 100 isn't grouped although it's below value 200000. 

Any idéas?
You find the sample on Onedrive

[ryan_mayu]

@MrMarshall

I created a measure for this. Please try this to see if this works. Thanks

Measure = if(SUM(Sheet16[value])>200000,SELECTEDVALUE(Sheet16[Group]),999)

[MrMarshall]

Thx for reply @ryan_may!

The problem is that I cannot use the the measure as a Legend in the Pie chart. 

[ryan_mayu]

@MrMarshall

I see. Let's see if anyone else has the solution for this. Sorry I didn't resolve this.