EDITOR Script to replace a mesh for many of the same type

I thought I would share this, as its something I had questions on, but luckily there are cool and smart people who keep posting tidbits of gold! So I thought I would give back. Brief- replaces all Mesh(s) in a selected gameobject with another (recursively)

I have train tracks in my project (work for the RR) and it drives me crazy to have to build them, so I am hoping EasyRoads next ver. will have the track placement issues adjusted.) So I wanted to swap out concrete ties for another version (lower polygon) I can do this at runtime, but I wanted to do it in the editor.

So here is a script I wrote, and it actually works!! (after a few issues) Would love to add to it, or correct it, so if you have any thoughts, please share. ----< JavaScript -------------

class ReplaceMeshRecursively extends ScriptableWizard {

    var meshName : Mesh;
    
    @MenuItem ("WAR/Replace Mesh Recursively...")
    
    static function ReplaceMeshRecursivelyItem() {
       ScriptableWizard.DisplayWizard("Add Component Recursively", ReplaceMeshRecursively, "REPLACE MESH", "");
    }
    
    //Main function
    function OnWizardCreate() {
               var total : int = 0;
               for (var currentTransform : Transform in Selection.transforms) {
                  total += RecurseAndAdd(currentTransform, meshName);
               }
               if (total == 0)
                  Debug.Log("No Meshs Replaced.");
               else
                  Debug.Log(total + " Mesh replaced with \"" + meshName + "\" ");
    }
    
    function RecurseAndAdd(parent : Transform, meshName : Mesh) : int {
                   //keep count
                   var total : int = 0;
                   //add components to children
                   for (var child : Transform in parent) {
                      total += RecurseAndAdd(child, meshName);
                   }
                   //add component to parent
                   //parent.GetComponent(MeshFilter);
                   if (parent.GetComponent(MeshFilter)) {
                      parent.gameObject.GetComponent(MeshFilter).mesh = meshName;
                      total++;
                   }
                   
                   return total;
    }
    //Set the help string
    function OnWizardUpdate () { 
                 helpString = "Specify the exact name of the replacment Mesh:";
    }
    
    // The menu item will be disabled if no transform is selected.
    @MenuItem ("WAR/Replace Mesh Recursively...", true)
 
    static function ValidateMenuItem() : boolean {
                 return Selection.activeTransform;
    }
 }