Function Arguements Expected

I got an error for function arguements expected.
I have a variable called oldPassword and I found the error when I typed print(oldPassword:len), I was testing print because of when I first found the error, I wanted to see if it's the oldPassword:len that was a causing the problem.

I need help to somehow fix it! :)/>

len is a function. oldPassword:len().

to elaborate, ":" can only be used to call functions stored in tables, not just to access them, which is why it's complaining you don't have function args - () - after it. If you used "." instead, it would return the function itself, tho still not call it, and it would just print "function: <some hex value>"

Oh right, damn, I always use that, I forgot :D/>, I was so annoyed trying to find the error, oh well :D/>, lol