Why is there no sound?

If I give the command block signal, e.g. With a lever, nothing happens. Does anyone know why?

PS

This is Minecraft PE

After the sound name, you have to enter who the sound will be played to. The syntax of this command is:

/ playsound type of noise targets position volume pitch minimum volume

Only players are possible for goals.

With sound type, whether it should be played as weather, players, creatures etc.

In position you simply write the coordinates where the sound should be played.

For volume, write the volume down (the maximum you can enter is 1000000000000000000000 or something, but the maximum that works is I think 100, so use 100. Even if 100 is the maximum, it is not loud)

At pitch, 0 is very high and 2 is very low, so if you want the sound to be exactly as it is, you have to enter 1.

Minimum volume does not matter. Just write 0 in there.