traffic_line query interface lose efficacy

[ATS-4.0.1 version]
http://www.apache.org/dyn/closer.cgi/trafficserver/trafficserver-4.0.1.tar.bz2

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The following queries have lose efficacy:
traffic_line -r proxy.node.cache_hit_ratio_int_pct
traffic_line -r proxy.node.cache_hit_ratio

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[root@New ~]# lynx -dump http://localhost:8080/stat/ | grep proxy.node.cache_hit_ratio
proxy.node.cache_hit_ratio=0.000000
proxy.node.cache_hit_ratio_int_pct=0