concatenate calculated column

I got this example from here: https://msdn.microsoft.com/en-us/query-bi/dax/concatenate-function-dax

Criterios = Concatenate(NF, Concatenate(",", Concatenate(MI, Concatenate(",", MV))))

[Edited, I didnt see you already had commas. I also did this with calculated columns from my data. You might need to update your desktop version if this is not working for you.] 

Criterios = Concatenate(NF, Concatenate(MI, MV))

Hi ajohn1

It worked, I used this expression: 

Criterios = CONCATENATE(FIXED(SomaTotal[NF];2);CONCATENATE(FIXED(SomaTotal[MI];2);FIXED(SomaTotal[MV];2)))

however, I don't know why, but I got the dot as a result instead of comma. Look at the picture below. 

 thanks!