Display Subtotal Text in ALV

Hi,

I have done the subtotal and total operation in ALV report.

I wanted to display the text like

Subtotal: _______

Total : _______

I tried to give the text in th layout like..

GD_LAYOUT-TOTALS_TEXT = 'Total'.

GD_LAYOUT-subtotals_text = 'SubTotal'.

i passed this layout in REUSE_ALV_GRID_DISPLAY

but i am not getting the text in the output. what is wrong?

Can any one please tell me to place the text?

Regards,

Elanthendral.