Does A Drop In TPHA After Treatment Mean My Syphilis Is Improving?

Hello doctor My TREPONEMA PALLIDUM HEMAGGLUTINATION POSITIVE (1:2560) 2 months before then I take treatment Now my TREPONEMA PALLIDUM HEMAGGLUTINATION POSITIVE (1:1280) It s mean My treatment was working or I still have syphilis ? I m planning to travel gulf countries so with this test I can pass in my medical test or not