How Do I Do With Buildbox 3.1.1 To Get The Enemy To Shoot Me ?

Hello everyone,
I want to make a mixture of action and platform game, but I don't know how to realize the logic that enemies come around and shoot me only when I'm in their field of vision. Thank you in advance for your help.

 

Skyhub Games have shotter node, where it shoots character, if near enough.
http://buildbox.com/forum/index.php?threads/crossbow-shotter-node-health-with-display.17493/

 

Thank you very much for solving my problem.