Revert to the previous value of a variable

Is this like on prototype or just the variables in general? Like you modified the variable and then after some time you want to revert it

I’m using a variable to store the name of a component variant. The first 3 variants are a linear progression so I just advance them using ‘on click’ in the component, but the 4th variant is not part of the progression and can be viewed at any time ie. you could be on variant 1, then switch to variant 4 or you could be on variant 2 and switch the variant 4 etc. so when you are viewing variant 4 and want to revert back to the variant you were on before, either 1, 2 or 3, I need to basically just go back 1 step in variable history. I’ve made this work by using a second variable but was just looking for something more convenient if it existed.