Suspend and Resume Scripts - Wiki incorrect?

I followed the instructions from here

Creating Suspend and Resume Scripts [LibreELEC.wiki]

and created a simple test script

/storage/.config/sleep.d/01-test.power

#!/bin/sh
case "$1" in
   pre)
     <do something on suspend>
     echo "suspend" >> "/tmp/test.log"
     ;;
   post)
     <do something on resume>
     echo "resume" >> "/tmp/test.log"
     ;;
esac

But it seems not working.

Are these instructions still valid for LibreELEC 9.0.1 or is there an other way run a script after resume?

Quote from vpeter

Remove do something line and try again.

Argh! I am so stupid, i just did a copy and paste into nano without thinking...

Thank's for your fast reply!

Here for completeness the working template script:

    #!/bin/sh
    case "$1" in
       pre)
         # do something on suspend
         ;;
       post)
         # do something on resume
         ;;
    esac