Hi Guys,
I would like to ask something regarding a formula I have been working on. See the table below.

Price Escalation formula = Input
Avg Selling Price = The Jan 13 value is constant referenced to 2.3 which is in another module. While the succeeding months starting Feb 13 to Mar 14 the formula is Avg Selling Price*(1+Price Escalation).
I tried the formula IF Price Escalation = 0 then Avg selling Price else Average Selling Price*Price Escalation.
I also tried IF Previous(Avg Selling Price)=0 then Avg Selling Price else Avg Selling Price*Price Escalation.
I still do not have the right calculation on my Line Item. Need a little input on this.
Appreciate it.
Regards,