Ignore self in multiplayer

In my multiplayer project, I will spawn a boom if I click right mouth button, after 2s the boom will explode and cause damage in a range.
My question is: what should I do to make the Boom doesn`t cause damage to my self?

When you spawn the boom, pass self (you, the spawner of boom) as instigator in SpawnActorOfClass node.

Now on the boom actor, when it explodes, pass damage to all Actors not equal to boom’s instigator

thank you!