Evgeny,

sory for late reply. I did not find you email at first and I was offline untill now. Lucky you found a solution.

Agnes

>Agnes,
>
>I found a solution. Instead of using SET RELATION I swiched to SET FILTER. The code in data orginizing part became even shorter:
>

>SET FILTER TO Days.MonthId=Months.Id IN Days
>SET FILTER TO Months.YearID=Years.Id IN Months
>GO TOP IN Years
>GO TOP IN Months
>GO TOP IN Days
>

>But grids got additional code in AfterRowColChange event:
>For Grid1 which displays Years cursor:
>

>IF Months.YearID<>Years.ID
>	GO TOP IN Months
>	thisform.Grid2.Refresh
>ENDIF
>IF Days.MonthID<>Months.ID
>	GO TOP IN Days
>	thisform.Grid3.Refresh
>ENDIF
>

>For Grid2 which dispalays Months cursor:
>

>IF Days.MonthID<>Months.ID
>	GO TOP IN Days
>	thisform.Grid3.Refresh
>ENDIF
>

>This also made me free in using any SET ORDER I want. But complicated a use of additional filters which is not a big problem due to FILTER() function existence.
>Anyway it's pity that prompt visual development in Data Environment Builder does not bring me to a result I expect.
>
>Thank you
>
>Evgeny