Highlighting duplicates using conditional formatting

[Minx_Minxy]

Hi,

68923	10
68923	20
68923	30
68924	10
68924	20
68925	10
68926	10
68927	10
68928	10
68923

<tbody>
[TD="class: votecell"][/TD]
[TD="class: postcell"] I need to highlight duplicates in column A, but only if column B is equal to 10.

[TABLE="class: grid, width: 200, align: center"]
<tbody>[TR]

</tbody>

In the example above, what I want it to do is, as soon as I input the value on column A the cell automatically changes colour highlighting only cells A1 and A10.
I have tried using sumproduct and countifs on conditional formatting, but it does not highlight the values.
Thank you in advance.

[/TD]
[/TR]
</tbody>[/TABLE]

 

[konew1]

Excel Workbook
	A	B
1	68923	10
2	68923	20
3	68923	30
4	68924	10
5	68924	20
6	68925	10
7	68926	10
8	68927	10
9	68928	10
10	68923
Sheet1

Cells with Conditional Formatting
Cell	Condition		Cell Format	Stop If True
A1	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc
A2	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc
A3	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc
A4	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc
A5	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc
A6	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc
A7	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc
A8	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc
A9	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc
A10	1. / Formula is =AND(COUNTIFS(A:A,A1,B:B,"")>0,COUNTIFS(A:A,A1,B:B,10)>0,B1<=10)	Abc

 

[Minx_Minxy]

Thank you very much! It worked really well!?