title: How to write variable with string in Pine Script?
body: <p>I tried to write text with variable, but I can't</p>
  
  <pre><code>aaaa = 121.150
  bbbb = 120.100
  target = "TP = " + ( aaaa * 0.9 ) + "\n SL = " + bbbb*1.01
  plotshape(data , style=shape.triangledown,location=location.abovebar, color=red, text=target)
  </code></pre>
  
  <p>I want the output looks like this:</p>
  
  <p><img src="https://i.stack.imgur.com/2mpLe.jpg" alt=""></p>