Web Chart - Change the Chart Title dynamically

I have a chart in a BW web report. I want to set the title to be something like:

MyChart Title - 24 Feb 2005

where the date would change depending upon when the report was run (ie I want this to be the date the report was updated).

The title that I want to change is the one that is actually generated and put on the image that is rendered, so that if they print the picture, they will still have the refresh date.

Does anyone know if this is possible, and if so, how do I achieve this?

Thanks in advance for any assistance.