TabLayout1.GetTitle does not appear to return the tab title in LAMW unfortunately, which is why you have run into this issue, I ran into that too, a possible (messy) workaround is when you add (or remove) your tabs like Tablayout1.AddTab('TitleName') to put the title text into a TStringList, or something similar at the same time and then search through that list instead to see if the tab title exists?