How to match the json sibling using expression

"Criteria" : [
{
"selectionCriteriaType" : "DEFENSE_REASONS",
"selectionCriteriaValue" : "AdditionalInformation"
},
{
"selectionCriteriaType" : "AVS_RESULT",
"selectionCriteriaValue" : "A"
},
{
"selectionCriteriaType" : "REFUND_STATE",
"selectionCriteriaValue" : "false"
},
{
"selectionCriteriaType" : "BILLING_ADDRESS",
"selectionCriteriaValue" : "false"
}

]

Above Json can be very huge and order of the elements  always changes. What would be my regular expression to match 

{
"selectionCriteriaType" : "REFUND_STATE",
"selectionCriteriaValue" : "false"
},