Dynamic currency from range of dates and multiple currencies

[Anonymous]

Hello, I need to switch to multiple currencies from an accountability table with another table wich has different curriencies per range of date. I don't know how to do it. Could you help me? I attach image from the currency table:

[Anonymous]

How to handle multiple currencies in DAX

[Anonymous]

Hello, it gives me this error: 

My accounting table only has Date Month (with multiples lines per DateMonth (1/1/18, 1/2/18, 1/3/18, etc) per project, project identifies each line). So, the error says "table proportioned with multiples values when only one was expected". 

Is there any workound? Thank you in advance