Brake pad renew question

[rogerkiu]

hi all! Yesterday I renewed my front bake pads by following the instruction in this forum. in the instruction, it did not mention the piston side brake pads are directional, so I just put on the brake pad without paying any attention to the direction. after the job, I looked into the TIS and it said the piston side brake pads were directional. I am not sure if I installed the piston side pads correctly by following the directional mark.

my question is do I have to dissemble the brake to check if it is in correct direction or it is still ok even I install the pads in wrong direction. Your comment is much appreciated. I an now very confused.