[5e OGL] Unarmoured Defense + Shields 5e

For a barbarian I can set the AC to be custom 10 + Dex + Con, but as soon as I add a shield it goes back down to 10 + Dex + Shield.  Pretty simple but I can't figure out how to do it Maybe there is a post about this, I have seen mentions of it through my google searches but everytime I follow a link that page has none of the content for my question.

It's a known bug with the custom ac option. There several posts about it on the sheet's thread, some of them by me. The workaround at the moment is to make a weightless object in your items tab and give it Ac +x in the mods field. You can't link it to your stat's mod, but the custom ac doesn't do that either. EDIT: now that I'm on my pc, here's the link to Steve's response on the issue:&nbsp;<a href="https://app.roll20.net/forum/post/3602544/5th-edition-ogl-by-roll20-v1-dot-6/?pageforid=3860213#post-3860213" rel="nofollow">https://app.roll20.net/forum/post/3602544/5th-edition-ogl-by-roll20-v1-dot-6/?pageforid=3860213#post-3860213</a>