how to remove characters from a string in lua

-- Define the original string
local originalString = "Hello, World!"

-- Define a pattern for the characters to remove
local pattern = "[, ]"  -- This pattern matches commas and spaces

-- Use the gsub function to remove the matched characters
local modifiedString = originalString:gsub(pattern, "")

-- Print the modified string
print(modifiedString)  -- Output: "HelloWorld!"