coverage on New code not showing

[ivy67...@gmail.com]

SonarQube 6.7

Java project,  run build using maven

SonarQube Scanner 2.4

other coverage data is shown correctly such as overall coverage including lines to cover, uncovered lines, line coverage, conditions to cover, uncovered conditions, condition coverage. But just there is no coverage on new code. I tried to get coverage on new code by running a analyzing with old version of code then running again with new version of code. 

Is there any suggestion about this problem? thanks!