Failed to create a CustomizationSpec with powercli

I just want to clone a LINUX vm with my specific CustomizationSpec,in powerCLI.

so I use command "New-VM -Name myClient01 -VM myTemplate1 -CustomizationSpec spc"

but the result is shown as following:

New-VM : 2017/12/24  16:34:53    New-VM

Required property hostName is missing from data object of type CustomizationLinuxPrep

while parsing serialized DataObject of type vim.vm.Customization.LinuxPrep

at line 1, column 623

while parsing property "identity" of static  type Customization.IdentitySettings

while parsing serialized DataObject of type vim.vm.Customization..Specification

at line 1, column 560

while parsing property "Customization" of static  type CustomizationSpec

while parsing serialized DataObject of type vim.vm.CloneSpec

at line 1, column 350

while parsing call information for method CloneVM_Task

at line 1, column 218

while parsing SOAP body

at line 1, column 207

while parsing SOAP enevlope

at line 1, column 38

while parsing HTTP request for method clone

on object or type vim.VirtualMachine

at line 1, column 0

Hopefully someone can help me out!

thanks in advance!