Changed data not reflecting CL_GUI_ALV_TREE

Hi All,

Iam using CL_GUI_ALV_TREE to display the Balance sheet data. I have added a button on application tool bar to convert data from one currency to other other currency.

Iam changing the data as per requested currency and modified final table.

In PBO , ALV container is called only once.

in PAI my routine converts the currency. I have used

CALL METHOD cl_gui_cfw=>dispatch.

CALL METHOD cl_gui_cfw=>flush.

Iam not able to see changed currency data on my ALV TREE .

Please let me know Iam missing any thing.

Thanks

Krishna