Challenge 9 - Help! Same code but cant use


Previously, in challenge 7,8, I am using about the same coding and said “congratulation” but now it keep mentioning “Your code ran but did not produce the correct result.” I have little programming background, but I really cant figure out where did I did wrong

function lightCell(coordinate)
return GRID[coordinate.charCodeAt(1)-49][convertColumn(coordinate)];

function isShip(coordinate)
if (lightCell(coordinate) === “v”) return true;
else return false;


Looks to me like the same problem explained here: