I want Random 10 - 20 cash. How do I write it?

[EarthWst]

        ['level_2'] = { 

            account = { -- start of weapons
                
                cash = {
                    randomAmount = true, -- randomAmount is the ammunition for weapons.
                    min    = 10,
                    max    = 15,

                    chance = 100,
                },
            }, -- end of weapons

        },