Getting Selected Text in Editable Text Box

I have in game books that the player has to take notes from. When i create an editable text box but make it read only, I can select any part of the text without changing the content. However i want a custom input to automatically copy that text into another widget. But i cannot get the selected text to make it a variable.

There is no event such as “get selected text” or something like that.
Also, i don’t want to use Unreal’s right click menu in the packaged game but no idea how to customize or get rid of it, if thats possible.

Still no solution to this?

Same Problem here