BIRT report- summary of multiple custom attributes required

Hi,

I am writing a summary report that shows the following breakdown by theme:

Theme name Total Points Remaining Points %Complete
themename1.......14.................6.....................57%

themename2.......19...............19.......................0%
themename3......100...............10....................90%
themename4.........27.................0..................100%


The colour coding shows the risk of missing the release based on velocity as calculated in the Advanced Burndown Chart.

The issue I am having is that not only is the Theme field a custom attribute, but so are the story points.

I have used a Data Set to create an array that stores the StoryId, Theme, ResolutionDate and StoryPoints. This is effectively 2 entries per StoryId.

The problem I am having is in now extracting that data into the table as detailed above - I am still learning javascript and I can't seem to be able to cycle through the array to pick out the data I need.

My datacube knowledge is pretty limited, but is that the way to go, and if so how would I be able to calculate the % complete in a datacube?

I am using RTC 3.0.1.

Any help would be appreciated.

Cheers

Alan