Kangaroo - Diagonalize

Hello!, i am learning grasshopper and hit a bit of a problem with this video, its using kangaroo to make diagonal grids using curves → to mesh → diagonalize however when i try to do it exactly like in the video, mine just shows up as solid color without the diagonal grids??

its suppose to be like in the picture below

Hi @Brian_Lee_Choi - hit Ctrl + M or: