Help to Labview architecture. Main VI and two subVIs

[Alias A]

Hi all!

I think that I should ask help and tips to create good architecture to my project before I started to build it wrong way. I run and handle two devices, which run independently in own VI's. Now I want to control those two devices on same control panel. Both Vi's contains many event cases. I have tried just create main VI and put those VI's in to same while loop, but it doesnt work that way (?). How I should create my main VI? 

I have attached examble what I am trying to say here 🙂

Thank You

[Jörn]

Hi,

your main  VI hangs in one of the event structures in one of the SubVIs.

Move all event cases to the Main.VI and call the SubVI according to the respective events.

Regards