views or gives the wrong variable when the variable is empty in the fields

hello
sorry for my bad english... :)
thanks a lot for this simple to use and useful module.

i am using views pdf and views or for converting to pdf a view.
i have to do a magazine (one content type) with 2 types of articles (2 content types).
they share sometimes fields and but sometimes i use views or to decide to write between 2 fields because the order of presenting them it is different.
when one of those fields have content, views or works perfect.
but when both are empty, instead of leaving it blank, it gives the content type, that is not what i am asking.

thanks again for the module, and if i have to give more information, i will be pleased to do it.

i am using drupal 6.22 and views 2.