Execute/Eval Script

Help and Feedback Scripting Support
#1

Is there a way to evaluate/execute code in lua. So lets say someone types print("hi") in a textBox, the script will now execute that.

#2

Lua does have a method of doing this loadstring().
I have no idea if it’ll work on roblox, but in the Documentation it does exist still: Lua Globals | Roblox Creator Documentation

Now, should you allow this? Probably not.
Someone could easily run malicious code. At the very least you should find a way to verify the code being run.

#3

The thing im doing is making a Promo Code plugin that I want to allow Game Owners to run a custom script when a user uses a promo code. No malicious code can be used.

#4

Okay, just make sure it checks that it is truly the owner that is executing the command.

You will also have to enable loadstring via the LoadStringEnabled property in ServerScriptService. Also I don’t think (not sure) you can loadstring on client (localscript).

#5

I just do loadstring(code) or what?

#6

For example:

loadstring("print('hi!')")()

Has the same effect as:

print('hi!')

PLEASE NOTE: When using loadstring, you will have to use two sets of parenthesis,
This will work:

loadstring("print('test')")()

This will NOT work:

loadstring("print('test')")
1 Like