Interrupt skill animation

[Cripplez 47]

Hello, I'm trying to make an effect that interrupt the animation of a skill, for example when you get stunned and you are doing a skill it is interrupted, i want to make a similar thing but that doesnt make you stop moving/attacking, but only interrupt a skill. I tried to find in the client the function that does this for stun but didn't work, do you have any suggestion? Thank you