Property Transfer Question

I typically create a properties step and use a groovy script to write my properties to that with a groovy test step. If I need multiple of the same value per request, I name them differently.

Example:

CustomerEmail

ManagerEmail

etc.

If I need multiple data-sets for multiple requests, I'd have:

CustomerEmail1

ManagerEmail1

CustomerEmail2

ManagerEmail2

Then in my groovy script I have a for-loop that iterates through how many data-sets I need, and generates how many elements I need per dataset.

Here's a very quick groovy script example. 

def propertiesStep = testCase.testSteps["Properties"];

def generateEmail()
{
     // insert email generation script here

}

for(int i = 1; i < 100; i++)
{
     propertiesStep.setPropertyValue("CustomerEmail" + i, generateEmail());
     propertiesStep.setPropertyValue("ManagerEmail" + i, generateEmail()); 
     i++;
}