Filefilter problem

I have created a button that is showing foldercontent in a menu. Now I want only show specific filetypes.For example:

Go C:\Test FOLDERCONTENT=filefilter=*.(exe|iso)
Not working. What's wrong here?

Sasa

If you add quotes as below then it will work:

Go C:\Test FOLDERCONTENT="filefilter=*.(exe|iso)"

Thanks. If quotes are necessary I wonder that DO don't use them automatically when using extended edit.