why wont my advancement work?

so im trying to make a procedure to give an advancement when backstabbing, but i cant get it to work

anyone got anything?

Event trigger - triggered by external call
or when (global trigger): Entity is attacked
Set number Local: targetYaw to: Direction (yaw) in de.g. relative to S of Event/target entity
Set number Local: attackerYaw to:
Direction (yaw) in de.g. relative to S of
Source entity
•
@ if
Get number Local: attackerYaw
do
Set number Local: attackerYaw to:
Get number Local: attackerYaw
360
if
Get number Local: targetYaw
O
do
Set number Local: targetYaw to:
Get number Local: targetYaw
360
Set number Local: angleDiff to:
Get number Local: targetYaw
Get number Local: attackerYaw
© if Get number Local: angle Diff
do
Set number Local: angleDiff to:
Get number Local: angleDiff
-1
@ if
Get number Local: angleDiff
180
do
Set number Local: angle Diff to: 3
360
Get number Local: angleDiff
▸ if
Get number Local: angleDiff
60
do Add advancement WhatHaveYouDone to Source entity