As explained in both, the help file and the FelixIP's comment in your previous post, this facility let's you to pick only one document. However, in the Using parameters to control how a program opens a hyperlinked document and Advanced hyperlink functionality sections of the help page, it is said that there are somewhat advanced functionalities whose usage is not as straightforward as selecting the to-be-hyperlinked document. Having said that, I can think of two options for your questions:
- Creating batch files (i.e., .BAT) for each feature, pointing to the files that you want to open in one-go, as explained here and giving hyperlinks to these BAT files;
- Listing all relevant documents separated by a delimiter in a field
and looping through by using VB or Python function as given in the
Advanced hyperlink functionality section of the help page. Say, your files are C:\filename1.mxd and C:\filename2.mxd for a polygon/row.
If you create a text field large enough to contain these paths (including
the delimiters) and concatenate with | as in
C:\filename1.mxd|C:\filename2.mxd
and finally use the Python script
below in Hperlinks>Script section, theoretically you should be able to open these
two documents with default program associated with MXD file.
import webbrowser
def OpenLink([Formatted_Lot_Plan]):
for path in [Formatted_Lot_Plan].split("|"):
webbrowser.open(path)
return