  We have investigated the superconducting(SC)-gap anisotropy for several
Ba-doped KFe$_2$As$_2$ samples using laser-based angle-resolved photoemission
spectroscopy. We show that the SC-gap anisotropy and node positions drastically
change with a small amount of Ba doping. Our results totally exclude a
possibility of $d$-wave symmetry and strongly suggest that both spin and
orbital fluctuations are important for the paring interaction in the Ba-doped
K122.
