UE4 plugin : prompt a number

Hey,

I’m trying to make a small plugin for my UE4 editor. I’m starting from the Toolbar Button plugin template (that UE4 auto-generates for you in the Plugins section) and I want to ask a number to the user when he clicks on the button.

For now the plugin opens a FMessageDialog which only seems to be able to contain text and Yes/No/Ok buttons, so it’s not what I’m looking for. How should I go about doing what I want there ? What should I open with my button, a new window ? That’s a bit overkill, no ? And if so, how do I add somewhere to type a number and a “ok” button to fetch that number ?