UK Reit income filing online

Hi,
I need to report income from a REIT.
On the paper form this would to go in box 17 with box 19 for the tax.
I'm doing my self assessment online but I can't find anywhere in the online system where I can input this income.
Many thanks

Hi Martin Crumper,
UK REITs are declared in boxes 17-21 of page TR3 on SA100 and online by ticking yest to the box on Page 2 of 3 of tailor your return - "Did you receive any other UK income, for example, employment lump sums, share schemes, life insurance gains?".
Thank you