If Statements and boo leans in Unity

B20

var myCheck : boolean = true;
 
function Update () {
 
 if(myCheck){
  guiText.text = "Its on!";
 }else{
  guiText.text = "Its Off!";
 }
 
 if(Input.GetButtonUp("Jump") && myCheck){
  myCheck = false;
 }else if(Input.GetButtonUp("Jump") && myCheck == false){
  myCheck = true;
 }
}