How do I choose 1 random item from family

I have several colored blocks for backgrounds and all I want to do is when the game starts is to tile one in from the family folder. Right now it's adding them all so it's just a rainbow of blocks for the background. I just want it to use one at a time on start of layout and use a different one each time you start the game.

Thank you in advance for your help.

System Pick a random instance of tilecolors > fill tiles with tilecolors.

Ok thank you I will try that... Thank you so much...

— thank you for taking the time but for some reason, it's not working...

Must be the long hours at work going in a 3am.

Thanks again

Hmm I'm not familiar with fill tiles, what is that object, some kind of plugin? Anyway, because you only want to pick the tile once I imagine if you add a Trigger once while true condition to the Pick random colors, it should work. Depends how the fill works...

Fair enough thanks