macro, balloons and property (link to a file or to a URL)

I want to create a macro that in a selected view in my drawing (.slddrw), it takes all already existing  balloons and sets their property "Link to a file or to URL" as adress to pdf file (e.g. "file://c:\namefile.pdf")

Result: when my colleague clicks to the balloon he opens the relating draw of the part.

Thanks for any suggestion...

SolidworksApi macros