How to keep the old line text?

See more:

C#

scripting

Unity

Unity3D

I have been trying to figure out this but with no success . What I am trying to do is to keep the old text while the script adds the new text below the old text.

public GameObject Text_Object;<br />
         private Text textComponent;<br />
 void Start () {<br />
         //gets the text UI Object in canvas component<br />
         textComponent = Text_Object.GetComponent<Text>();<br />
                 textComponent.text = "Hello";<br />
                 Text2();<br />
     }<br />
<br />
 void Text2(){<br />
 textComponent.text = "Hey";<br />
 }

Basically as you can see the first text gets replace with the second text. What I'm trying to do keep the old text while if I press T it prints the new text below the old text and also add a command when they hit D it clears the text new and old text.

What I have tried:

I have tried researching it but found nothing