Activator VARIABLE: placeholders doesn't parsing totally!

Placeholders in VARIABLE activator doesn't work!
I tested this with /ra set id var:testvar value:value
And it doesn't seems to work. Maybe I used the wrong placeholders?
%var_id%
%var_old%
%var_new%
These placeholders was in the wiki. And doesn't work.

Server console log:

[21:48:59 INFO]: modgamer issued server command: /ra add VARIABLE testvarchange id:testvar personal:false
[21:48:59 INFO]: [ReActions] Command registered:
[21:49:34 INFO]: modgamer issued server command: /ra add testvarchange action LOG Var ID = %var_id%
[21:49:43 INFO]: modgamer issued server command: /ra add testvarchange action LOG Var New Value = %var_new%
[21:49:51 INFO]: modgamer issued server command: /ra add testvarchange action LOG Var Old Value = %var_old%
[21:50:03 INFO]: modgamer issued server command: /ra set var id:testvar value:1
[21:50:03 INFO]: [ReActions] Var ID = %var_id%
[21:50:03 INFO]: [ReActions] Var New Value = %var_new%
[21:50:03 INFO]: [ReActions] Var Old Value = %var_old%
[21:50:05 INFO]: modgamer issued server command: /ra set var id:testvar value:2
[21:50:05 INFO]: [ReActions] Var ID = %var_id%
[21:50:05 INFO]: [ReActions] Var New Value = %var_new%
[21:50:05 INFO]: [ReActions] Var Old Value = %var_old%
[21:50:06 INFO]: modgamer issued server command: /ra set var id:testvar value:12
[21:50:06 INFO]: [ReActions] Var ID = %var_id%
[21:50:06 INFO]: [ReActions] Var New Value = %var_new%
[21:50:06 INFO]: [ReActions] Var Old Value = %var_old%
[21:50:09 INFO]: modgamer issued server command: /ra set var id:testvar value:test
[21:50:09 INFO]: [ReActions] Var ID = %var_id%
[21:50:09 INFO]: [ReActions] Var New Value = %var_new%
[21:50:09 INFO]: [ReActions] Var Old Value = %var_old%
[21:50:11 INFO]: modgamer issued server command: /ra set var id:testvar value:text
[21:50:11 INFO]: [ReActions] Var ID = %var_id%
[21:50:11 INFO]: [ReActions] Var New Value = %var_new%
[21:50:11 INFO]: [ReActions] Var Old Value = %var_old%