Hi Mala, you do have JavaScript on your computer, it's built into every web browser and also into MoI as well.

But you don't need to use any script for that, MoI v4 has a built in volume calculator. You can access it by selecting your solid and then push the "Details..." button in the upper right area of the main window:



On the Object properties dialog, push the "Calc" button under Volume:



When the volume value is displayed you can click on it to copy the value to the clipboard.

- Michael