How to add skip forward xyz

Hi

i tried to add 90s skip time by ssh

https://kodi.wiki/view/Skip_steps#Custom_skip_step_values

nano /storage/.kodi/userdata/advancedsettings.xml

<advancedsettings>
  <seeksteps>10,30,60,90,120,300,600</seeksteps>
  <musiclibrary>
    <backgroundupdate>true</backgroundupdate>
  </musiclibrary>
  <videolibrary>
    <cleanonupdate>false</cleanonupdate>
  </videolibrary>
</advancedsettings>

I have no idea why this is not working. What is it I am missing?

Thank you all in advance!

Thank you for your answer.

I’ll just add 45s instead of 30s, so that will work for me.