Note that there is already an hardcoded ui for it. So if it makes it more easy you can start from there:
set up in ->Assets/Dev/Fabio/RandomUpgrade
Within the scene show the options by going to the context menu for the UI/UpgradeOptions gameobjects and clicking "SHOW".
Then select any option with the number keys "1", "2", or "3"
Note that there is already an hardcoded ui for it. So if it makes it more easy you can start from there:
set up in ->
Assets/Dev/Fabio/RandomUpgradeWithin the scene show the options by going to the context menu for the UI/UpgradeOptions gameobjects and clicking "SHOW". Then select any option with the number keys "1", "2", or "3"