Random selector that avoids duplicates


I'm trying to create a random selector that avoids back-to-back duplicate selection, but I can't seem to get it to work.

This is what I've got going so far. Any tips would be greatly appreciated!

Remove the for each number from block ?

I need more coffee, apparently. Works just fine that way.

Admittedly, I was trying to do it through a loop to meet an assignment requirement, but I will try to incorporate a loop elsewhere in the app. Thanks!

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