/execute give no output

When i use the /execute command on a command block a comperator give me no output.
I use this command:
/execute @a[score_Feuer_min=1] ~ ~ ~ scoreboard players set @p Feuer 0
and the output is:
[18:40:53] Set score of Feuer for player MisterQuatsch to 0
but i don´t give a comperator output.