Change the body of the JSON request while looping through the test case

Is there a way to change the body of the JSON request when looping through the test case.

For example I want the request to return all rows where "Result_Field = Pass", the next loop I want to change to where "Result_Field = Processing", etc.

{
"command": "get",
"options": {
"where": "Result_Field = Pass"
}
}