How to aggregate on SAS STUDIO

[YannRC]

I have a lot of questions on flow.

I want to aggregate data at week level. My first DATA are on a day level.

I Change it in YYWEEKV5 and WEEKV5 in informat (I have not an other choice).

I put a SUM on the variables.

But the result is not good. It continue to aggregate at a day level 

If you can help me

[YannRC]

It would be helpful to have a sample for me and other users

I am on the LTS09. Before, It was very easy for me but now.....