VCO change vm when using instantiateVAppTemplateVdc

I need to  know   how  to change  vm  name when using instantiateVAppTemplateVdc .

i have already know  how to create   vapp  with vm but  and can't change vm  name

that's my example

info = new VclMsg();

info.value = "Lease Settings";

deploymentLeaseInSeconds = 168 * 60 * 60; // Hours

storageLeaseInSeconds = 720 * 60 * 60; // Hours

localityParamsReferences = new Array ();

actionResult = System.getModule("com.vmware.library.vCloud.schema.objects").createLeaseSettingsSection(null,deploymentLeaseInSeconds,info,0,null,storageLeaseInSeconds) ;

/// convert to array

actionResult = System.getModule("com.vmware.library.vCloud.common").convertToArray(actionResult) ;

/////  create  instation parmas

insatns_parms = System.getModule("com.vmware.library.vCloud.schema.objects").createInstantiationParams(actionResult) ;

//// create insata vapp tmplate parms

var paramsArg = System.getModule("com.vmware.library.vCloud.schema.objects").createInstantiateVAppTemplateParams(

0,1,'sdsd',insatns_parms,0,0,"sdsdsdsdsd",

1,vapptemp,[],vdc_obj)

///  craete insata  vpp template

actionResult = System.getModule("com.vmware.library.vCloud.operation").instantiateVAppTemplateVdc(targetEntityArg,paramsArg) ;