Need some Basic Help

Ahoy, I'm a complete nub when it comes to map making and triggers but I've got good ideas so I want to accomplish something.

I was making a basic attribute based ability ( it was supposed to be a slash move, doing damage based of strength ), which I used storm bolt as the base and converted it so it would be close range and stuff and worked the trigger so it would do damage based off strength.
My problem is that for some reason when I use it the ability it does like its supposed too and deals damage according the strength variable. It also knocks back the unit and perma stuns it. I have no idea why it does it and cannot figure it out, I've re-created the ability using a different base ability thinking that storm bolt was a reason, yet it does the same thing.

Any help is very much appreciated.
I'm about to just spout out my ideas and see if other people can make it, and if anyone is willing to help me I would be vastly grateful.

Did you set the duration on Storm Bolt to 0.0? In most cases, a duration of 0.0 means infinite duration. Have you tried a non-stun spell?

I changed the base ability, which caused the stun to go away.
Yet it still knocks back the target and if the ability instantly kills the target there is no animation or cooldown.