Thanks for Reply 
there are many ways to achieve this issue. And i’ve solved this issue like this.
Every Spawner has boolean to Spawn check or not.
So When this logic is executed at first time, Spawner supposed to has boolean “true”.
After Second execution, It will be pass and the other spawner will execute spawning Actor.
It seems like Switch or something haha:)
The Most important thing is “Random Integer in Range” is Pure Function.
As you know, there is a reason why i should set “Random Integer Value” Before Branch !