Sumif with Date Format

[italy16]

[TABLE="width: 500"]
<tbody>[TR]
[TD][TABLE="width: 500"]
<tbody>[TR]
[TD][/TD]
[TD]1/1/14[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]1/1/14[/TD]
[TD]6[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]1/6/14[/TD]
[TD]5[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]1/25/14[/TD]
[TD]8[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]

[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Question - I need this to sum to 19 but I can only figure out how to sum to the 6. I think I need a text YYYYMM in my sumif somewhere. [/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]

 

[sheetspread]

Excel 2010
	A	B
1		1/1/2014
2	1/1/2014	6
3	1/6/2014	5
4	1/25/2014	8
5
6		19
Sheet6

Cell Formulas
Range	Formula
B6	=SUMPRODUCT(--(MONTH($A$2:$A$4)=MONTH(B$1)),$B$2:$B$4)

 

[italy16]

Thank you!