Contracts Usage - Fixed and Additional Usage

Hi,

We have the following requirements. Please suggest a solution for this.

         

Fixed Prints (A)	Month (B)	Start Counter ( C )	End Counter (D)	Additional Prints E = D-(B*A)	Fixed Amount ( F )	Overage Rate ( G)	Overage Charge H  = E * G	Total Mthly Charge I = F + H
100000	1	0	90000	0	500	0.005	0	500
100000	2	90000	230000	30000	500	0.005	150	650

Solution we thought of is as follows:

Create a Contract with 2 Lines:

1 - Normal Service Contract Line, for Fixed Amount

2 - Usage Contract Line for Additional Usage - In Install base Capture, Counter = Additional Points + sum of Previous Additional points

Thanks,

Chakravarthy.