Combo Boxes Passing Selections to Other Dashboards

I was running into a similar issue with selecting multiple items in a combo box and passing it in to the dashboard extender rule. Only the first item selected would write to the error log. I found a separate post on here (https://community.onestreamsoftware.com/t5/Rules/When-selecting-multiple-items-in-the-list-box-only-the-first-one/m-p/19788) that recommended the use of [ ] when passing in the named value pair into the dashboard extender rule and this appears to be working as expected!