I added tags to your post to increase visibility.
The different quantification calculations that OpenLAB ChemStation employs are outlined in the Reference to Operation Principles manual. This manual can be found on disk 2 of your installation media, or at the following link: https://www.agilent.com/cs/library/usermanuals/public/CDS_CS-references.pdf . The section on quantification begins on page 81 (section for the ISTD quantification mode begins on page 90).
Am I guessing right if I suppose you saved your ratio:
R = (Area of Compound)/(Area of ISTD) * (Concentration of ISTD)/(Concentration of Compound)
in a variable ?
If yes, you have to consider that in Intelligent reporting a variable can only contain one value. If for example you want to save one variable "Ratio" for each of your peak,
If you save the variable as following:
Then, when you recall the variable, you will always return the last value which was saved for this variable.
If you want to save your variable for each of your peaks. You would need to save it with a unique key value, such as Peak_ID:
In that case you save one value for each peak, and if you recall your variable, every peaks will have its own value.
PS: To modify your variable. You will need to remove all expression that uses your variable in every fields where you used it. Then click "report properties", and in the variable tab, delete the variable. Then recreate the variable using the unique key value.