How to compose a nested SUMIFS function in Google Spreadsheets?

Question

Google Sheets

Table:

-----A-----------------------------B 
1    26.12.2014 15:53:24        500 
2    26.10.2014 15:54:05        423 
3    26.12.2014 15:57:06        5000

Please tell me how to correctly compose this nested function:
=SUMIFS(B:B; MONTH(A:A); "10")
That is, sum columns B, in which the number of the month in A is 10. In this example, it should turn out 423, but instead it writes:

#VALUE! Error: Array arguments in SUMIFS function have different sizes.

Answer 1

=SUMIFS(B:B; ARRAYFORMULA(MONTH(A:A)); "10")