File Input Enapsulation: Disk Input Icon/Dialogue

Question

I can make a file input paramter field, yet a disk dialogue button does not appear, which is the correct combination of selections on the    Type:    Field Type:      Category:

Ta

Charlie

Answer 1

Ahh, I needed to select the second item as file name, after the first. If that makes any sense.

File name, File Name, Constant.