I finally sort it out, so consider this as info for you if you meet the same need.
I created a new file format (lets say it´s *.NFF) for the purpose and made a data card for it. User can define folder path by clicking on the data card button and it´s stored to file data card variable.
after this action any of user can select this file and run dispatch. Dispatch reads varible value from data card and uses it as parameter in shell execute open command "C:\Windows\explorer.exe"
So the file *.NFF can be stored anywhere in EPDM with folder path information content and by using dispatch user can open new explorer window in the specific folder path.
I hope i could help some of you
I am currently investigating a way to perform exactly what your original post outlined, but I am not understanding how your second post satisfied the need. Please forgive me, I am unfamiliar with dispatch. After running dispatch how is the file link stored? How are you able to access a dynamic folder location through the card?