SOLVED Accessing an other C# script and run a function

Dear All,

I am starting to freak out. There are 2 scripts attached to the same GameObject, one refering to the other with:

 ScreenShotMultiple w = (ScreenShotMultiple)(GameObject.Find("7-1 OK").GetComponent("ScreenShotMultiple"));
             w.enabled=true;
             w.Screenshots();

In the refered ScreenShotMultiple script there is the function like this:

 public void Screenshots()
     {
     StartCoroutine(TakeScreenshot());    
     
     }

I can easily access the script, set in enabled, get values from it, but running this function does not work, I keep getting the following error:

error CS1061: Type ScreenShotMultiple' does not contain a definition for Screenshots' and no extension method Screenshots' of type ScreenShotMultiple' could be found (are you missing a using directive or an assembly reference?)

What am I doing wrong? As always any help or hint is thanked in advance.