leaking brake valve

Yes this the valve I have been talking about .I put both lines from the master cylinder before I slid down into position , I instead the lines jest as In line tubes told me my lines are not leaking it is leaking at the copper washer . I cleaned the block and the input line with alcohol .I pumper the brakes then got back under the car first checking line and fitting no fluid put my fingers on the block at area on the top of the block and found fluid .Thank you for posting the picture I tried but no luck .
Thank you for the help Waco Demon