Invoke scope

I think this might be a scope issue but I want to sure and/or find a better way to do it.

What I want but doesn't work:

     void SuperCoolFunction ()
     {
 
             Invoke("Someobject.SomeMethod", 2); // run method of object
 
     }

Returns after 2 seconds "Trying to Invoke method: Someobject.SomeMethod couldn't be called."

But this code did work:

 void SuperCoolFunction ()
         {
     
                 Invoke("ThisOtherFunction", 2); // run method of object
     
         }
 
 void ThisOtherFunction () {
                 Someobject.SomeMethod();
 }