For learning purposes, I'm implementing slash commands into Auto Repair to toggle the use of guild funds for repair.

The code that is part of this is...

local UseGuild = 1

function ar()
    if UseGuild == 1 then
        UseGuild = nil;
        DEFAULT_CHAT_FRAME:AddMessage("Not using guild repair!",100,50,0);
    else
        UseGuild = 1;
        DEFAULT_CHAT_FRAME:AddMessage("Using guild repair!",100,50,0);
    end
end

    SlashCmdList["ar"] = ar()
    SLASH_ar1, SLASH_ar2 = "/ar", "/autorepair";

                    RepairAllItems(UseGuild);

I wasn't sure if I should or was allowed to post the whole code but I'd appreciate it if someone could take a look. If I'm allowed to post the whole thing, please say so.

Something that sticks out to me immediately is that you don't put parentheses behind a function when assigning it to a variable.  That is:

SlashCmdList["ar"] = ar()

should be:

SlashCmdList["ar"] = ar

Wow....

It was that simple. It works now. Thanks a ton man!