Degresive depreciation automation code not working!

Hi there !
I recently had some problems with an excel macro which calculates the digressive depreciation of an asset.It might be a problem with the repetitive structures. If you could help me in this problem i would be very grateful ! Thank you!

Here is the VBA Code behind the macro:

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And here is a bunch of useful links for the method of calculation:
http://www.assetaide.com/depreciation/calculation.html
http://my.opera.com/BangNgo/blog/dep...-methods-in-ax

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