message: Bug fix: t_string MergeFloatBy() should accept both Integer & Float type
diff: @@ -244,7 +244,8 @@ OP_NAMESPACE_BEGIN
  {
  if (val.GetType() > 0)
  {
  - if (val.GetType() != KEY_STRING || !val.GetStringValue().IsInteger())
  + if (val.GetType() != KEY_STRING ||
  + (!val.GetStringValue().IsInteger() && !val.GetStringValue().IsFloat()))
  {
  return ERR_WRONG_TYPE;
  }
  