Your line there:
Lua Code:
enabled = ["min"..option].cbutton:GetChecked(),
You're trying to reference some table "minduration"? Does this table exist? If so you can't reference it in this manner.
It looks like you're trying to find a checkbox and determining if it's checked or not.
Please post your full code to give a better interpretation.
If this table is global, you can find it within the global namespace as follows:
Lua Code:
enabled = _G["min"..option].cbutton:GetChecked(),
That being said, a global with that name is just asking for trouble.