Problem with usage of Direction Procedure Block

Hello

I must add a speed effect if the player faces north so I do need to use "Entity direction in deg. relative to S"

I read some topics on this forum and no one explains how to fix my problem.

When I try to print the value into minecraft chat, MCreator refuse to compile mod because of an error so It's hard to learn how it works.

Anyone knows how to fix this or to use properly the block ?