@ronny911 - good point, on Mac the macro needs to be slightly modified:
Instead of sending the file path with XType , we need to select the file from the dialog. For this we can use the new desktop automation feature of Kantu. We switch the Kantu eyes to desktop mode with XDesktopAutomation | true and then use either XClick | image of file name or (recommended) XClick |ocr=file name. This does a text search for the file name on the screen, finds it and then clicks it.
The remaining part of the macro is the same. We use XType to send ENTER, and all is done.
I tested that this works and made a short screencast:
