State tax filing

@JamesG1 , I just came across the Colorado Net Capital Asset Income screen while doing my 2021 taxes. I sold rental property back in 2018. I had an accountant do my taxes back then, so I don't know how this was handled (although I could go back through my papers and look it up). I do recall paying a large about of capital gain taxes for this sale, at least at the Federal level. 

The way this list of requirements is listed, it almost sounds as if I could enter my 2018 sale here, now, in 2021. It qualifies in all respects. But is this only for sales of real or tangible property that occurred in 2021?

Thanks in advance,

Rosie