Need help with the Event Graph (Controller support)

Hi Guys, i need help with Envent Graph from the Dev Kit.
I have make a mod with weapons. Some Weapons have a special function like color chance from a crosshair.
Now i search a way to activate this options by controller with a double push on the controller buttons.
Is there a way to make this? How can i do this? I Like to activate this options with a double push on the buttons on the controller like the laser attachment.

Thanks for help.