I've been trying to make an object's load function be called on lot load, but it doesn't work sometimes. In function's description (in SimPE) it says the function is called when "object version" variable is different from one in object's definition. I wonder, what the "object version" means, what it does, what makes it change, at what point, etc. Is it safe to change it manually (e.g. in expression) and what value can we change it to?