Control Widget Tooltip with Behavior Tree

Hey everyone,

Hoping to explain myself (english is not my first language so I apologize in advance). I made a dialogue system (widget) that changes text with a behavior tree (here is the tutorial I did to create my system Unreal Engine 4 - Dialog System Tutorial (1/3) - YouTube). Now I want to add the translation of the dialogue (hence the tooltip) but just as I am using behavior trees for my dialogue. I would also like to use it for the tooltips.

Can I code a behavior tree on a widget or add an actor component to a widget?

Thank you in advance for your help!