Same VHD Unitrends Storage Addition

Spiceheads,

I'm toying around with a Unitrends Virtual Appliance for backups on VMware ESX 5.0. I expanded the VHD after install to accommodate more data. However, I cannot get the software to realize the VHD is bigger. I realize now that it wanted me to add a separate VHD. But, is there anyway to get it to recognize the expansion of the origional VHD?

Thanks