Button in ALV toolbar with REUSE_ALV_GRID_DISPLAY

Hello friends,

I am Displaying ALV using REUSE_ALV_GRID_IDSPLAY. i need to add a button in grid toolbar.

i am doing it by adding a new ZSTATUS in SET PF_STATUS. but the problem is that it is removing the standard buttons.

i want to add button without removing the standard butttons.

Please help.

thanx in advance.

Krishan Kumar