vix api in IVM2.Clone() err

Hello, everybody
I am Chinese,English is not good,I use C# developers.
My code ------------------------------------------------------------------------------------------------------------Start----

/// <summary>
/// 克隆虚拟机 · Clone vm
/// </summary>
/// <param name="ivm">虚拟机·vm</param>
/// <param name="Path"> vmx file Path</param>
/// <returns></returns>
public IVM Clone(IVM2 ivm, string Path)
{
IJob jobHandle = ivm.Clone(null, VixCOM.Constants.VIX_CLONETYPE_LINKED, Path, 0, null, null);
int[] lookForProperties = new int[1] { VixCOM.Constants.VIX_PROPERTY_JOB_RESULT_HANDLE };
object foundProperties = new object();

ulong vix_res = jobHandle.Wait(lookForProperties, ref foundProperties);
if (vixLib.ErrorIndicatesFailure(vix_res))
{
return null;
}
object[] properties = (object[])foundProperties;
IVM vmHandle = (IVM)properties[0];
return vmHandle;
}

------------------I call the

Clone(ivm,"[LS_2_DISK] 192.168.88.11/192.168.88.11.vmx")

My code ----------------------------------------------------------------------------------------------------------------end----

I execute the code Returns an error（6 – VIX_E_NOT_SUPPORTED The operation is not supported.）
Remark：api documentation say “VixCOM.h, since VMware Workstation 6.5 (not supported on VMware Server)”

I use vmware esxi, My IVM2.close() and IVM2.CreateSnapshot() is Success(ok).
Powerful heroes to help look thank