Overlap checkbox in trace responses

[Anton_Luk]

There is a checkbox “Overlap” in trace responses for visability and camera channels:

Could somebody sugges what can they be used for?

[Everynone]

Overlap - if the other actor is set to either overlap or block, an Overlap Event can occur.

Visibility - a general testing channel, literally object visibility

Camera - when you want to trace from the camera

You can use them when you trace by channel:

Here’s a great in-depth entry:

Collision Filtering in Unreal Engine 4

[Anton_Luk]

Thanks for quick reply!
The problem is overlap events are not triggered. Or am I doing something wrong?

Generate overlap events checkbox is ticked.
When I use MultiSphereTraceByChannel to trace this object I assume that at least one of print strings should be executed, but it does not happen.