[Solved]Action Delegate wont work

Hey, im using Unity 2017.1.0f3

When i try to run this code

Code (CSharp):

1.    
2.     public void testa()
3.     {
4.  
5.     }
6.  
7.     private void testb()
8.     {
9.         abc(testa);
10.     }
11.  
12.     private void abc(Action Callback)
13.     {
14.         Callback();
15.     }

i will get these errors

abc(Action)' has some invalid arguments

error CS1503: Argument `#1' cannot convert `method group' expression to type `Action'

error CS0119: Expression denotes a `variable', where a `method group' was expected

the exact code works in another project same unity version.

Maybe someone have the same issue or a solution?

 

What happens If you use System.Action instead of Action?

 

will try in a min. but im using System

 

Wow to be Honest that works xD but i cant imagine why

Code (CSharp):

1. using System;

im using System lik that and it should work. i think it have todo something with the project because in another one it works without System.Action

But thanks

 

Ok got it was a bit Blind xD there is a Class named Action thats why