well, write a .lua script for sky plunger game. script has to edit height and scrap volumes.

Certainly! Below is a sample Lua script designed for modifying certain properties in a hypothetical "Sky Plunger" game. It illustrates how you might adjust player's height and scrap volumes. Since the actual structure of your game might differ, you'll want to adapt these functions according to your game's API or frameworks.

```lua
-- Sky Plunger Game Script
-- This script assumes you have functions to get/set player properties and game settings

-- Function to set player's height
function setPlayerHeight(player, newHeight)
    if player and newHeight and newHeight > 0 then
        player.height = newHeight
        print("Player's height set to: " .. newHeight)
    else
        print("Invalid height value")
    end
end

-- Function to adjust scrap volumes
function setScrapVolume(scrapContainer, newVolume)
    if scrapContainer and newVolume and newVolume >= 0 then
        scrapContainer.volume = newVolume
        print("Scrap volume set to: " .. newVolume)
    else
        print("Invalid scrap volume value")
    end
end

-- Example usage
local player = {
    height = 1.5  -- Current height in meters
}

local scrapContainer = {
    volume = 100  -- Current scrap volume in liters
}

-- Set new values
setPlayerHeight(player, 2.0)           -- Change player height to 2.0 meters
setScrapVolume(scrapContainer, 150)    -- Change scrap volume to 150 liters

-- Print current state
print("Current Player Height: " .. player.height)
print("Current Scrap Volume: " .. scrapContainer.volume)
```

### Explanation:
1. **Functions**: There are two functions:
   - `setPlayerHeight`: This function takes a player object and a new height value, checks its validity, and sets the new height.
   - `setScrapVolume`: Similar to the above, but for the scrap volume, it ensures the new volume is non-negative.

2. **Example Usage**: The script creates mock objects for the player and the scrap container, sets new values for height and scrap volume, and then prints the changes.

### Customization:
Depending on the architecture of your game, you may need to replace the mock structures and property names with the actual implementations you have. Adapt this script according to:
- The actual data structures you're using for the player and scrap volume.
- The environment in which your Lua scripts are running (like a game engine or a specific library). 

Make sure to test the script thoroughly in your game environment to ensure it works as expected.