Sonar 3.6.1 : Manual metrics and treemap components - sonarqube

Question

I have a problem with SonarQube 3.5.1 / 3.6 / 3.6.1.
I use web API to inject manual metrics values for a project like this :
curl -u user:password -d "resource=<project>&metric=<key of metric>&val=<value>" http://localhost:8081/sonar/api/manual_measures
More over, I use sonar-runner (with a .properties file) to run analysis after injected these values.
One of these metrics is a percentage and this metric is declared as a Percent Unit value in Sonar (in Settings => Manual Metrics menu).
I have a project with components and each project and components have this metric value injected and I can see it in Sonar.
When I want to show this metric as a color metric in a "treemap of components" widget, all the treemap is grey (as if values are not defined).
But if I put mouse on the name of component in treemap, I see the color metric value as a percentage value like this :
myComponent - ncloc: 800 - myMetric: 84,0%
Moreover, scale metric color does not appear in treemap title (after Size ncloc Color <my metric>).
Colors and scale appear if I choose an other metric for color (not a manual metric).

Answer 1

In fact feeding a manual metric is a two steps mechanim:
Define the value of this manual metric as you did by calling for instance the 'manual_measures' web service
Launch a Sonar analysis on this project to 'associate' this manual measure to the latest quality snapshot of this project
Then you should be able to use this manual metric in a treemap.

Answer 2

I finally found a solution for this problem.
In metrics table in database, i realized that my manuals metrics for color treemap don't have worst_value and best_value (value was NULL).
select * from metrics where name like 'sp_violations_density';
Result :
+-----+-----------------------+------------------+-----------+--------+-------------------------------+-------------+----------+--------------+---------+--------+------------------------+--------------------------+----------------------+--------+------------------------+
| id | name | description | direction | domain | short_name | qualitative | val_type | user_managed | enabled | origin | worst_value | best_value | optimized_best_value | hidden | delete_historical_data |
+-----+-----------------------+------------------+-----------+--------+-------------------------------+-------------+----------+--------------+---------+--------+------------------------+--------------------------+----------------------+--------+------------------------+
| 161 | sp_violations_density | Rules compliance | 0 | Issues | SyncPerl Compliance Rules (%) | 1 | PERCENT | 1 | 1 | GUI | NULL | NULL | NULL | NULL | NULL |
+-----+-----------------------+------------------+-----------+--------+-------------------------------+-------------+----------+--------------+---------+--------+------------------------+--------------------------+----------------------+--------+------------------------+
So i set them with 0 and 100.
update metrics set worst_value='0' where name LIKE 'sp_violations_density';
update metrics set best_value='100' where name LIKE 'sp_violations_density';
Need a Tomcat restart, and then it works.
Treemap has colors now.