 So you have a variable in your master menu and you want to adjust it from a button in the submenu. Not a problem. One way you can do this is with an event dispatcher. Go to the submenu with the trigger button and under the event dispatcher click add. Name it add an input and we'll name this variable index setter. We want to adjust an integer then in the design area go to your main menu and click the submenu that has the event dispatcher you just created. Then at the bottom under events you should see it down here click it and it should appear in the graph. Now you just drag the variable you want it to affect like so compile save then go back into the submenu with the button click trigger as usual drag out and call your event dispatcher and decide what you want to set that variable to I want this button to set the index to eight. So that's what I'm going to say here compile save you're done. Now you can see that every time we click the submenu button the main menu variable is updated. Hope that helps and as always I hope you have a fantastic day and I'll see you around.