zathura: Get current page number on exec command

Is there a variable similar to $FILE or % to get the current page number from Zathura? I'm trying to write a script to generate a text/markdown file with annotations from the pdf I'm reading. It would be executed using the :exec function. I'd like it to write the page where the annotation was made, like: Page 1 - "Annotation" Page 3 - "Another annotation" Is it possible?