[SOLVED] Shrink disk size

Hello,

  I have problem with disk size. accidentally i increased wrong VHD size from 50 GB to 100 GB. As you can see in the image, extra 50 GB still is not is use and i want ask how can i restore this empty space to vmware datastorage that this partition would be only 50 GB. Can i do this with vCenter or i need other tools. Thanks for answers.