ALV in report screen with dynamic values, filled during runtime?

[radoslav1]

Hello experts, I got a pretty unique requirement,

Customer wants a dialog program with ALV logic. 
He wants to have an alv display directly on the selection screen with values that are filled after executing.
Flow goes like this:
1. User enters some input on parameter fields
2. Based on that I fetch values from the background and display on an alv on the same screen
3. User needs to have the option to pick one of those values and program flow continues.

I am also open to suggestions with a dropdown menu instead instead of an alv, but would really prefer an alv.
Any assistance on how to achieve  this will be appreciated.

Thank you.

[RaymondGiuseppi]

Using a docking container attached to the selection screen (CL_GUI_DOCKING_CONTAINER), you can display an ALV grid in this container using any ALV class.

/or

You could include the selection screen in a subscreen of a standard screen.

[RaymondGiuseppi]

Sample : Display ALV report output in the SAME Selection Screen