BI report how to showdecimals in the layout

Hi Gurus,

I have requirement like

ex.sign of -(negitive value) i would like to show (values with decimals)

1) -7866.00 ,i would like to show (7866.00)

2)for positive values it should show like 6769.00

i have try this logic in the rdf..i have done everything except decimals...

i can able to produce the result like below..

1) -7866.00 ,i would like to show (7866)

2)for positive values it should show like 6769

I couldn't able to show the decimals..when i used

<?format-number:CF_S_EXTENDED_PRICE_DSP;'999G990D00'?>

regrads,

Srini