Did you have an opportunity to use the Recommended Google search to reveal SAS-hosted DOC and other technical reference material that may help?
Also, given your response "...with no luck." -- can you be more specific about the SAS behavior when you use the code shared? Possibly share the exact SAS log output (pasted in a post/reply to the forum)? However, from the code you did share, I see a missing tick-mark in your second date literal value.