Where is action (or something like) "Pick Random Integer...ect."?

[Estel3]

I'm working on a spell for an anti-spellcaster unit, where a unit casts a spell in range of the aura, the projector of the aura (or an ally, if I decide to go that way) has a 5-25% chance of being healed for some amount of health.

But I can't figure out how to pick a random integer. I think I can pick a random integer between 1 and 100 but I can't make it pick a number between like 5 and the level of the ability for the projector of the aura (I store him in a variable when he learns the ability).

Could someone please tell me how I can do this? Thanks.

 

[elmstfreddie]

Event: A unit starts the effect of an ability
Conditions: Distance between casting unit and aura projector less than X
Random integer between 1-100 is less than random number between 5-(real(level of ability for(unit)))

 

[Ghan]

I think you need something like this:

Untitled Trigger 001
    Events
        Unit - A unit Starts the effect of an ability
    Conditions
        (Random integer number between 5 and (Level of <Your Ability> for (Casting unit))) Equal to <Whatever>
    Actions
        <Do whatever>