MYNEWT_VAL_STATS_CLI value cannot be change

[then yon]

Dear Support,

I been using MyNewt v1.0.0-dev, and i tried to enable statistic package 
for bletiny project so i can use the stat command.

What i did was following the tutorial below:

http://mynewt.apache.org/network/ble/ini_stack/ble_statpkg/

and i try to change MYNEWT_VAL_STATS_CLI to 1 by adding STATS_CLI: 1 to 
bletiny/syscfg.yml and -"@apache-mynewt-core/sys/stats" to bletiny/pkg.yml.

But after i build it doesn't change the MYNEWT_VAL_STATS_CLI at 
target/generated/include/syscfg/syscfg.h.

Please help if i missing some important step on this.

ps: stat command is working if i comment out #if MYNEWT_VAL(STATS_CLI)

Thank you.

Regards,

Then Yoong Ze