Real quick eval() question

I'm using eval() on a function that takes string parameters. Currently I'm doing this:

for (%player = 1; %player < 5; %player++)
{
    %param1 = "controller";
    %param2 = "value";
    eval("%tempData = TorqueDB.searchByInstanceWithClass(%param1, %param2, $player" @ %player @ ".controller);");
    ...
    ...
}

Is there a way I can still include the string values without having to store them in locals first? I don't really mind doing it this way but I'm curious.