Ai move to object

I want to make defense type game. So i have created Ai to come and kill me and now i need Ai move to object to destroy. Ive tried so many things but he just stands. So i need Ai move to static mesh, how can i do it?

Before asking, take a look at a few videos and tutorials, there’s really a lot about ai navigation. Here’s one :

Dont know how did i miss this tutorial but thank you very much!

But can i switch target point to static mesh like cube?