Getting the SUM of CurrentValue field but only for last month

[CHFarver]

Hi there,
I have been struggeling with this for quite some time now. Don't know what I am doing wrong.
I have the following FACT table which gets generated merging excel files together via a folder structure:

 
This will get updated once a month (in the end of each month). The actual stocks and Investments will not vary too much, but their value will. Therefor I need to be able to calculate the SUM of the CurrentValue colmn, but only for the latest recorded month. In this instance it is all the rows from 31-01-2021. Next month it will be 31-01-22, and so forth.

I have a DIM_Dates table as well connected to the FACT table:

I have tried multiple things but it doesn't seem to work for me. For example I tried these measures:

Total Portfolio Value = SUM(FACT_Investments[CurrentValue])

Current Portfolio Value =

CALCULATE(Calculations_Basic[Total Portfolio Value], DATEADD(DIM_Dates[Date], -1, MONTH))

But this does not work and still gives me the sum of ALL my rows (hence: both november and december 2021):

The value should be 457.510,45 kr.

Thanks in advance.

[CHFarver]

This seems to work perfect so far. And I just tested when applying a new sheet as an example. Thanks alot!

[amitchandak · Accepted solution]

@CHFarver , Try a measure like

Current Portfolio Value =
var _max = eomonth(maxx(allselected('FACT_Investments'),'FACT_Investments'[date]),0)
return
CALCULATE(Calculations_Basic[Total Portfolio Value], filter(DIM_Dates, eomonth(DIM_Dates[Date],0) =_max ))