(Aras PLM Server Side Method ) Get Controlled Item when called within a method triggered from a Workflow

GetControlledItem.cs

// Retrieve the workflow item(s)
Innovator inn = this.getInnovator();

Item wflItem = this.newItem("Workflow","get");
wflItem.setAttribute("select","source_id,source_type");
Item wflProc = wflItem.createRelatedItem("Workflow Process","get");
wflProc.setAttribute("select","name");
Item wflProcAct = wflProc.createRelationship("Workflow Process Activity","get");
wflProcAct.setAttribute("select","related_id");
wflProcAct.setProperty("related_id",this.getID());
wflItem = wflItem.apply();

if (wflItem.getItemCount() < 1 || wflItem.getItemByIndex(0).getProperty("source_id","").Length != 32 || 
wflItem.getItemByIndex(0).getPropertyAttribute("source_type","keyed_name","").Length < 1) 
{
  return inn.newError("Error retrieving workflow: " + wflItem.getErrorDetail());
}

// Build a list of ids For the versions of the controlled item
StringBuilder idList = new StringBuilder();
for (int i=0; i<wflItem.getItemCount(); i++) {
  if (wflItem.getItemByIndex(i).getProperty("source_type","") != wflItem.getItemByIndex(0).getProperty("source_type",""))
  {
    return inn.newError("Error: Workflow Process attached to items of different types");
  }
  idList.Append("'" + wflItem.getItemByIndex(i).getProperty("source_id","") + "',");
}
idList.Remove(idList.Length - 1, 1);

// Retrieve the current item controlled by the workflow
string contType = wflItem.getItemByIndex(0).getPropertyAttribute("source_type","keyed_name","");
Item contItem = this.newItem(contType,"get");
contItem.setProperty("is_current","1");
contItem.setProperty("id",idList.ToString());
contItem.setPropertyAttribute("id","condition","in");
contItem = contItem.apply();
if (contItem.getItemCount() != 1) return inn.newError("Error retrieving controlled item: " + contItem.getErrorDetail());

return contItem;