I can't see technical debt information in Cppcheck custom rule

SonarQube version : 6.7.6

I manually set Cppcheck custom rule like below:

> <rules>
>   <rule>
>     <key>blar.blar</key>
>     <name>blar.blar</name>
>     <severity>MINOR</severity>
>     <description>blar.blarblar.blarblar.blar
>     </description>
>     <tag>blar</tag>
> <debtRemFnType>CONSTANT_ISSUE</debtRemFnType>
> <debtRemFnOffset>5min</debtRemFnOffset>
>   </rule>

I can find overall information in rule tab, however i can’t see technical debt information.

I don’t know the problem.

Could you give me some advise?