Adding Cluster Memory

Hello,

I want to add up the memory used on the Host in a cluster so I can score the clusters find the cluster with the "most free" memroy so far this is what I have.  I have trouble adding up the memory on the host however

var byteToMB = 1024*1024;

var mbToGig = 1024

var overCommit = 2;

var datacenter = Server.findForType("VC:Datacenter", "fqdn/datacenter-22");

var clusters = datacenter.hostFolder.childEntity;

//System.log(clusters);

for each (VcComputeResource in clusters) {

  var host = VcComputeResource.host;

  var name = VcComputeResource.name

  var totalMemory = VcComputeResource.summary.totalMemory/byteToMB;

System.log("Total Memory" + " " + "of " + " " + name + " is " + totalMemory);

for each (VcHostSystem in host){

//var hostUsageTotal = 0;

var hostUsage = VcHostSystem.summary.quickStats.overallMemoryUsage;

var hostName = VcHostSystem.name;

System.log(hostName + " " + "has a Memory Usasage of " + " " + hostUsage);

}

}