Create OpenDocument from Template accepts an optional repetitive trigger <Images>. To add the trigger, right-click the Create OpenDocument from Template element and select it in the Add Element sub-menu).
The <Images> trigger expects image files provided as Common/Data Structures/File type structures. If you're using one of the Chart templates, you should create a file structure, with the template's binary output passed to the Content element of the file structure, and an identifier (name) passed to the File Name element (the Content Type element can be left empty).
In the actual document template, you should add temporary pictures (as image placeholders) which will be replaced by the actual images during runtime, by matching the image's File/File Name element to the picture's Name property. To set the Name property in openoffice, right-click the picture, select Picture... to open the Picture properties dialog, select the Options tab. The Name property should be the first one.
Note that if your document template contains multiple images, you should use different placeholder images for each (a single pixel of difference is all that's needed), otherwise the process will fail.
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