How to attach more resolutions to the virtual win7 with Kepler Gpu?

the sdk version is 2.3.7 final
the driver version is 354.13_grid_kepler_win8_win7_64bit_internation
the desktop system is win7_sp1

I cant not find the 1440*900 resolution,so how to add more resolutions to virtual system or the gpu?
Use the nvapi?
Does anyone have any ideas about this?

Hi peilin, please contact us via e-mail to GridPubicSupport@nvidia.com. Are you running on AWS? If not, what GPU are you using, and which Xen VM are you running with?@nvidia.com. Are you running on AWS? If not, what GPU are you using, and which Xen VM are you running with?

There is a way to add custom resolutions, but it will depend on which hardware and also require the correct calls to the NVAPI funtions for this.

Hi eyoung,I am not running on AWS,and the type of GPU is "GRID K120Q vGPU(8 per GPU ,2560x1600,2 displays)" in XenServer 6.5

thank u very much