How do i re-open my app running in the background

[Yellow_App_dev]

Please i need help on how to use a timer (sensor) to open my app using the package name of my app or through any method.
Please help
Thanks

[Alapjeet (Alapjeet Singh)]

I don’t think so it’s possible..
Let’s wait what other say on this matter..

[The_K_Studio (Karan M.)]

From where you will open your app? And where you will use the timer?

[Yellow_App_dev]

I want to open my app from an external app