// change entry 0
public void Change(DateTime utc, string catname, string fdname, int num, long price, int cnum = 0, bool setit = false)
{
var cat = MaterialCommodityMicroResourceType.CategoryFrom(catname);
if (cat.HasValue)
{
Change(utc, cat.Value, fdname, num, price, cnum, setit);
}
else
{
System.Diagnostics.Debug.WriteLine("MCMRLIST Unknown Cat " + catname);
}
}