How to check the month the measure is calculated for?

[Fistachpl]

I have a visual in form of a table. 

In the first column I have the months:

january
February
...
December

I am doing the calculations (calculating the sum of sales in each month of current year). How can I add another measure to display the name of the month from the first column?

[Gabry · Accepted solution]

Name of month = selectedvalue(calendar[monthname])