Set a Chart Name via API

Set a Chart Name via API

Hi

I'm new to Zoho reports (I know, RTFM, right?) and have been banging around with the API, interfacing successfully with Ruby. What I haven't found is a way to title a report/chart at runtime. For instance, I've got a sample report showing the number of jobs opened between two dates (selected by the user on the previous screen) - the title of the chart is simply Number of Jobs Opened By Job Type Over a Date Range. I'd like to replace this title with "Number of Jobs Opened Between October 1 and November 1." Having looked through the API, I haven't found any access point to retitle a report or chart on the fly.

Any help?