How do I revert back to old versions

[Conzaghetto]

So I want to revert back to old AOTB versions, but I didn't load any of the past versions, I just got the modpack today, but I want to go back to an old version, but I don't know how. If you do please help me?

[StratusNightstar]

Left side of the launcher where you can choose the different packs there is a cog. Click on that and you can choose the different versions from there

[Conzaghetto]

I went there, but the was no place to change versions. Is it because I didn't load the old ones so they aren't there?

[Kalbintion]

Sounds like you didn't use the cog icon under the modpack logo on the launcher.

[Conzaghetto]

Maybe, I will see what I can do.

[Loader]

the cog icon under the modpack logo

There are two cogs - make sure you're not clicking the one in the top-right, that is not the one under the modpack logo.

[Conzaghetto]

Okay, thanks for all your help guys! I figured it out.