How to transfer some output to properties

Hi,

Thanks so much. I was try the

def n = (int)(10)
def randomNumber4 =(int)(Math.pow(10,n-1))+(int)(Math.random()*9*(Math.pow(10,n-1)))
def props = testRunner.testCase.getTestStepByName("Properties");   
props.setPropertyValue("randomValue4", String.valueOf(randomNumber4))


I find that if the n>=10, the random number is incorrect.  Is it exist a limit of properties.

..........

def n = (int)(11)
def randomNumber5 =(int)(Math.pow(10,n-1))
def props = testRunner.testCase.getTestStepByName("Properties");   
props.setPropertyValue("randomValue5", String.valueOf(randomNumber5))

If the n is 11, the value of randomNumber5 in properties is 2147483647. How to increase the limit of these properties?