Safety Stock Calculation Possibility

Hi

I am implementing Oracle OPM-EDD Constrained ASCP.

Type	July	Aug	Sep	Oct
Forecast	1000	1500	1800	2000
Safety Stock		1020
Beginning On Hand	500
Planned order		2020
Projected On Hand	500	1020

Lets say I launch planning in July. I want to calculate planned order for august. If:

Bucket Days = 30

Safety Stock Percent = 1700

Safety Stock Method = MRP Planned Percent

Can Safety Stock Calculate like this?
Safety Stock = (Demand from today until next bucket days / Bucket Days) * (Safety Stock Percent / 100) = (1800/30)*(1700/100) = 1020

I want Demand from today until next bucket days is forecast in september which is 1800.

Is there any workaround for this requirement?

Thank you

Aji