How to user parameters in a data-driven loop?

This can be achieved via scripting in a number of ways, but you need to define your data structure first i.e. the inputs. 

Comma-separated values (CSV), usually contains a set number of columns, first being the header, followed by X number of rows that contains the data.

Year, Make, Model, Trim, BodyStyleName, ChromeTrim
2003, Acura, CL, 3.2 Type S, Coupe, 2dr Cpe 3.2L Type S
2003, Acura, CL, 3.2 Type S, Coupe, 2dr Cpe 3.2L Type S 6-Speed
2003, Acura, CL, 3.2, Coupe, 
2002, Acura, CL, 3.2 Type S, Coupe, 2dr Cpe 3.2L Type S
2002, Acura, CL, 3.2, , 2dr Cpe 3.2L
2001, Acura, CL, 3.2 Type S, Coupe, 2dr Cpe 3.2L
2001, Acura, CL, 3.2 Type S, Coupe, 2dr Cpe 3.2L Type S
1999, Acura, CL, , Coupe, 2dr Cpe 2.3L Manual
1999, Acura, CL, 3, Coupe, 2dr Cpe 3.0L

Read the csv file, and pass the appropriate data to the function - empty values can be ignored

Sorry to say but i do not think that will solve my problem.
I want to run the test with different "values" and want to set these values at the start of the test
E.g. i will run the tets with Value "Test1"
Then another person running the tets wants to use the following values" xyz", "abc"
A third person will run the test with e.g. the following values "Tester", "testvaluezzz"
So there is no fixed list and i want to give the values at the start of the test and then do a data-diven test with all values i set in the "parameter" at start

Thanks, using the commandline sounds a little better but is it also possible to enter multiple values within the commandline (so that i can do a data-loop)?
The idear behind is:
1st set userrights to a used testuser (on a customer webpage)
2nd  do a specific test with minumul userrights (that i set before)
3rd delete userrights

And as i need more that 1right i am actually doing that with a predefined .csv file and dataloop (this already works,
but i have to use/adapt the csv file before each testrun it i need different "values".

So i tried to "generalize" it but did not find a method where i can set the values at teststart.

If there would be a posibility to enter mutliple values for a parameter and use it in dataloop i could enter the values at testexecution or in the executionplan for each test (instead of using a csv for each test)

Ok thanks for help. I will check if that is easier for us.
Did i get it right, it is only possible when using a variable and enter the variable values via commandline, seperate it with a  script to multiple values and use the variable in dataloop.
But it is not possible to do it with multiple parameters (in a dataloop) what would be much easier.
Nevertheless thatnks for your help. I will close it now