Not sure if you still have this problem, but thought I’d answer if you do. Unlike excel, there is no automatic Execute Macro function in uipath (Visual basic has it, but so far not uipath). So what I did was a combination of hotkeys.
First on the machine running the robot you need to have your macro installed under the normal.dot function.
To do this, open VBA under word and do an import file placing the macro under the normal directory. This allows the macro to be available to any word application running on that PC
In uipath in the word application scope:
‘send hotkey’ of ALT-F8 (this opens the macro window)
‘Run Select item ‘list’’ with your macro name
Do a Click ‘push button’ to run OK
This worked for me better then trying to work my way through the Word menu system.