REMINGTON'S PROFILE

Hey, first off let me say that I know Im here asking about an RPG maker thats not very known or praised.. I think its basically the same thing as the other RPG makers around here in general.. AND I have searched everywhere on the net and couldn't find ANYTHING about this game specificaly since (RPGpavilion) went away? The information I got so far with RPG maker 3 is its VERY simplified and you can't really do much as of customization.. Basically I'm trying to setup a chest with random items that the player can get at random with a % chance or whatever I can use.. problem is with this maker I only see that you can use variables with NO random number option/generator or a % get this % get that option..the only thing I see is one option that is "Val-Conditional Branch" that I could use 4 differenent "Value(=,<.>)Specified Value" options, and I can also set the "Variable" numbers here for each branch outcome, then after that I try to setup that the player would recieve the item in each branch based on the "Values" which I can set myself BUT NOT making it random numbers. There's also a "internal dungeon variable" which I can set a number but once again..there's no random option..BASICALLY I want to know if its even POSSIBLE to setup a random variables to get items on this game with ONLY variables and no random options...I dont want to waste my time trying for hours (which I already have) if its not possible. thanks in advance