BO Development Issue

Hi All,

We have a week dimension object  with values

WK01

WK02

WK03

..

.

.

.

.

WK52

we need to create a cloumn chart with Week as dimension and one measure value .

but chart should represent only 4 weeks like for example

if User choose WK 14 in the input control then the chart will show four columns with data WK11 WK12 WK13 WK14 dynamically.

Please help ....

Thanks,

DP