I want to be able to have a one page that for example has a table (a search interface made from a SQL method) and the chart (GDChart) of related information.
I know how to pass the variable to one of these objects from a hyperlink on previous page however I want to pass the variable to both objects on this pass.
Try something like <dtml-var "my_method(myvariable='my_value')> and variations. For questions like these take a look at the valuable searchable archieves at http://zope.nipltd.com/public/lists.html because it's clearly something nearly every zopista hits against in his learning process. For instance searching for passing AND values AND method brought a heap of answers to this question. The answers there will also give further valuable information about some things also important to know in this context. cheers, oliver