What folder are you trying to open?
I was trying to open a folder, whose full name was not known, using Base Elements excellent plugins function "BE_OpenFile". I only know the first word of the folder name and it doesn't appear that the plugins function supports wild cards.
Either way, I have solved my problem.
Base Elements MOST excellent plugin does have a "BE_ExecuteSystemCommand" which allowed me to replicate what I was doing previously via Applescripts "Do Shell Script" command. Shell scripts do support wildcards.
Best thing is when you solve your own things =)