About State tree AI component

Hi guys. Recently, I’m developing the state tree AI. And I met some questions. In this component, I can bind the context with the ai controller. But I don’t know why it can’t read the value in my ai controller

Guys , I find something strange. When I run my BT, the Attack Target can update which I use the AI perception to check. But when I run STAI It can’t update it. I don’t know why