Checking for gamerules doesn't work

I tried making gamerules to switch things in my mod on or off, but when I was playing in the game, it wasn't checking for the gamerule. Whether it's true or false, it still acts as if it were true. I've checked and double checked my code, and it doesn't work. 

In the code, I check if the gamerule = true, and if so, it should do the procedure. Any ideas why this isn't working?