[development-axapta] Filter Date (just Month and Year)

[arykamal07]

I want to filter query with month and year. I must convert the input of date to 
format month and year.
I use :  
strper1  = "01/" + date2str(Periode,0,0,0,2,0,0) + "/" + 
date2str(Periode,0,0,0,0,0,4);

dateper1 = str2date(strper1,123);

But, its not work.

Anyone to help me?
Thanks