Under Report Data, please note there is a menu bar under Report Data with New, Edit, Delete icon and two arrows. We will come to these arrows later.
Expand Parameters node.
Click on the first parameter.
Once you have clicked on the first parameter, the menu bar under Report Data that has New, Edit, and Delete icon will have a up and down arrow in blue. Click on the down arrow and your first parameter will move down below the second parameter.
This will help you re-order your params.
"Software changes. This is a rather obvious statement, but it is a fact that must be ever present in the minds of developers and architects. Although we tend to think of software development as chiefly an engineering exercise, the analogy breaks down very quickly. When was the last time someone asked the designers of the Empire State building to add ten new floors at the bottom, put a pool on the top, and have all of this done before Monday morning? " : Doug Purdy, Microsoft Corporation