Making character not allowed to ride anything

[Glaudeo]

I want to make a character who will be not allowed to ride any rideable things.
So, I made a function in my prefab file:
local function NoMount(inst, target)
        if target and target.components.rideable then
            inst:PushEvent("refusedmount", {rider=inst,rideable=target})
            target:PushEvent("refusedrider", {rider=inst,rideable=target})
        end
end
But nothing works. What is wrong?

Edited July 12, 2020 by Glaudeo