Problem with DATESMTD

[ContabilidadBI]

Hello guys,

I am new to power BI and I have been struggling to make a simple month to date sales card for a few hours. Here is the formula:

MTD de Total = CALCULATE(SUM(Albaranes[Total]);DATESMTD(Calendario[Fecha]))

And here is the fact table of sales and the Calendar table:

Now we are in May, so I should be getting the sum of sales amount since 1/5/2017 until today: 4/5/2017 .  Instead I am getting BLANK as the output. What am I doing wrong?

Thanks for all the help and learning I am getting from this forum!!