RATE error

Hi Experts,

I wanted to know about the following script:

*LOOKUP RATE

*DIM RATEEUR:TIME="2006.AUG"

*DIM RATEEUR:CATEGORY="ACTUAL"

*DIM RATEEUR:R_ACCT="AVG"

*DIM RATEEUR:R_ENTITY="GLOBAL"

*DIM RATEEUR:INPUTCURRENCY="USD"

*DIM RATEEUR:MEASURES="PERIODIC"

*ENDLOOKUP

…

…

*WHEN P_ACCT

*IS "CE0004010"

*REC(EXPRESSION=%VALUE%/LOOKUP(RATEEUR), RPTCURRENCY="USD")

*ENDWHEN

The question I have in this is suppose I am maintaing rates in a template like this:

(case-1)

             april'14   may'14

USD       1               1

GBP        1.3            1.5

So for above rates its working fine and I saved the data and working perfectly. But lets say now if I change the rate in between my planning cycle like this:

(case-2)

           april'14   may'14

USD       1               1

GBP        1.5            1.2

Then the issue is still the data which I saved in my report getting calculate on the old rates (case-1) not getting updated by new rates. So, Please guide how I can do this and what changes I need to maintain in my script for this.

Thanks

natasha