Right tab problem

Hello there.

I am trying to set up a right tab in a PDF-doc.

I have some text I want to be along the left margin and some other text that should be along the right margin.
In MSWord I would make a Right Tab in the ruler. If I do and save the doc as .rtf, I can see in the code that there is a tab definition as follows:

LeftText \tqr\tx7200\tab RightText

However, it does not work when I try to DrawStringRtf it.The regular \tab works fine. 

Best regards,

SteffenJ