# Behavior Tree Quick Start Guide **URL:** \ **Category:** AI\ **Tags:** Behavior-Tree, service, unreal-engine, UE4, question\ **Created:** [June 24, 2018, 10:20am UTC](https://forums.unrealengine.com/t/behavior-tree-quick-start-guide/428010 "2018-06-24T10:20:10Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![anonymous\_user\_3374dc0c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_3374dc0c](https://forums.unrealengine.com/u/anonymous_user_3374dc0c)\ **Post date:** [June 24, 2018, 10:20am UTC](https://forums.unrealengine.com/t/behavior-tree-quick-start-guide/428010/1 "2018-06-24T10:20:10Z")
So I was following the Behavior Tree Quick Start Guide and got stuck on step 14. I added the service AgroCheck to the Behavior Tree but when I clicked on it, the Default section didn’t appear in the Details panel. Can someone tell me why and how to fix this? ---
**Author:** ![ThompsonN13](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@ThompsonN13](https://forums.unrealengine.com/u/ThompsonN13)\ **Post date:** [June 24, 2018, 1:41pm UTC](https://forums.unrealengine.com/t/behavior-tree-quick-start-guide/428010/2 "2018-06-24T13:41:15Z")
did you make your variables public when you made the service? if not then they wont show up when you select the service in the behavior tree, no variables no default section. ---
**Author:** ![anonymous\_user\_3374dc0c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_3374dc0c](https://forums.unrealengine.com/u/anonymous_user_3374dc0c)\ **Post date:** [June 25, 2018, 3:28am UTC](https://forums.unrealengine.com/t/behavior-tree-quick-start-guide/428010/3 "2018-06-25T03:28:57Z")
Somehow it doesn’t work for me.