unity3d - unity C# run method from another class -


I want to run metod in class in second class and both of them arrive at different obj

Two classes. The first is: 

  Public square Noscore: Monobahavier {Public Zero UpdateSourBuy (Intro) {debug. Logs ("intra + 4" + intra + 4); }}   
 and the other is:  
  public class newplus: monobahavik {public nouster noucकोर; Public Zero OnTriggerEnter2D (collider2D obj) {newscore.updateScoreBy (+1); }}   
 When I run my code, I do not have an orientation set for an example of "Null ReferenceExtension: Object Reference Object" and it is on newscore.updateScoreBy (+1) Indicates; How can I fix this?   
 
 
 Depending on what you want to do, you can make the function stable:  
  public static zeros update int intr {debug.log ("intr + 4" + intr + 4); }   
 and call with:  
  NewScore.updateScoreBy (1);

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