Buff Stackable?

Been working on a map lately after a long rest from scripting. I have alot of questions. I've been trying to create a MUI DoT ability. When i cast for example farie fire on a unit, and another hero cast farie fire on the same unit, the 1st farie fire buff will get overwrite!

Is there a way to prevent the above situation, so that when 3 hero cast farie fire on unit A, unit A will have 3 farie fire buff?

Thanks to those who help

No, there is not. Only aura buffs can stack, so you will need to either manage the aura buffs on your own or use a buff system from our system database.