[Lua] [Error] For limit must be a number?

Title: [Lua] [Error] For limit must be a number?
I've been having problems with my Prime Number program. The code is in http://pastebin.com/75kYHgMQ
Whenever it finishes the inputs, an error pops up: "prime:23: "for" limit must be a number." What will I do?

http://pastebin.com/ME4j1ix0

Here you are :)/>

Line 23 calls for the value of variable "Num", which does not exist. Lua is case-sensitive: "Num" and "num" are two different things.

SadKingBilly, on 22 April 2013 - 09:54 AM said:

Line 23 calls for the value of variable "Num", which does not exist. Lua is case-sensitive: "Num" and "num" are two different things.

Somehow with my own version even changing it to num, it still does not work… although combined with mibac138's version, it works now. Thanks!

:)/>