Load Test

Hi everybody,

I'm testing web services with soapUI 4.5 and it's a great tool.
I have make "TestSuit": i'm filling in variables and run.. ; show errors, etc
I would like test load test with different data in variables, i don't know if i can add a file with different varibles and so i can do a load test changing data.
Perhaps i don't explain clear, i need to do load test i don't know if my request can accept data of file. And if is possible, How i can do it?

Thanks in advance.