How to use Not contains function in string in UIPath

Question

consider following variable.

strValue = “This is an exam”

I want to condition if “exam” is not contained in this variable then how to condition.

tried below approach but it did not work.

Not strValue.Contains(“exam”)

Answer 1

use the following approach 

strValue = “This is Test”
var i = strValue.indexOf("Test");
if(i>0){
  console.log('Test is present in strValue');
}