Need help adding data disk to VM, do not have option to "Add Data Disk"

I have a Windows 2012 R2 virtual machine that I want to attach a data disk to.  I created a 5GB fixed VHD I created locally on my laptop and then uploaded it to the same storage as the OS VHDs.  If I then try to use the web interface to attach the disk, I do not see the option to "Attach Data Disk".  If I try to add it via PowerShell using:

Get-AzureVM-ServiceName"MyService"-Name"SQLVM1"|Add-AzureDataDisk-ImportFrom-MediaLocation"http://portalvhds.blob.core.windows.net/vhds/MyDataDisk.vhd"-DiskLabel"DataDisk1"-LUN0|Update-AzureVM

I get the error:

Update-AzureVM : Value cannot be null.

When I look at the vhds container under the storage node...it shows the VHD I uploaded.  When I look at Disks under the virtual machine node...I do not see my data disk listed.  Not sure where to go from here.