Browse-Button in "Edit Command"-Dialogs

[MBaas]

When editing left or right-button options of the customized toolbar, I often find myself cancelling that dialog (or having to open a 2nd instance of XY) coz I had forgotten the path of the file I wanted to use (or had overwritten the cliupboard-contents). It would be very convenient if the "Edizt"-Dialog had a "Browse"-Button which would allow selection of a folder or file and then just insert that elements path at the cursor-position.