Fixed Scrap value for assets

Hi All

We have requirement in our project, the requirement is:

at the end of life of every fixed asset (tangible) there should be 1 INR as scrap value. and depreciation method should be "Strainght line method"

<b>for example</b>: Fixed asset (APC) value: 1000 INR and life of asset is 5 years then in such case the depreciation should be calculated

End of year 1 200

End of year2 200

End of year3 200

End of year4 200

End of year5 199 (Scrap value 1 INR).

Kindly help me, how do I can set this in SAP. at present we have settings for Scrap in percentage only.

Thanks in advance.

Zeenath.