Call a script from script

is it possible to call a script callScript("") from another script, not a rule?

The wiki says:

To be able to do something useful with the scripts, openHAB provides access to

  • all defined items, so that you can easily access them by their name
  • all enumerated states/commands, e.g. ON, OFF, DOWN, INCREASE etc.
  • all standard actions to make something happen

callScript is listed as a core action so it should be available.

And yes! it is working.
Thank you.