Geometric　Hall　effect　is　induced　by　the　emergent　gauge　field　experienced　by　the　carriers　adiabatically　passing　through　certain　real-space　topological　spin　textures,　which　is　a　probe　to　non-trivial　spin　textures,　such　as　magnetic　skyrmions.　We　report　experimental　indications　of　spin-texture　topological　charges　induced　in　heterostructures　of　a　topological　insulator　(Bi,　Sb)(2)Te-3　coupled　to　an　antiferromagnet　MnTe.　Through　a　seeding　effect,　the　pinned　spins　at　the　interface　leads　to　a　tunable　modification　of　the　averaged　real-space　topological　charge.　This　effect　experimentally　manifests　as　a　modification　of　the　field-dependent　geometric　Hall　effect　when　the　system　is　field-cooled　along　different　directions.　This　heterostructure　represents　a　platform　for　manipulating　magnetic　topological　transitions　using　anti-ferromagnetic　order.