picking just the first occurence in a json response using .check

Gatling (Open-Source)
1

my json response looks like this:

`

{
“resultCode”: “SUCCESS”,
“errorCode”: null,
“errorMessage”: null,
“membershipCoupons”:
[
{
“membershipId”: “32059336”,
“coupons”:
[
{
“offerId”: “000C297765971EE4A8C22C6999211BA4”,
“description”: “Gift1”,
“graphics”:
[
{
“width”: 400,
“height”: 200,
“quality”: “Low”,
“url”: “https://site/02_201504_003/000C297765971EE4A8C22C6999211BA4Low.jpg”
},
{
“width”: 900,
“height”: 600,
“quality”: “High”,
“url”: “https://site/02_201504_003/000C297765971EE4A8C22C6999211BA4High.jpg”
}
],
“endTime”: 1425168000000,
“activationDate”: null,
“redemption”: null
},
{
“offerId”: “000C297765971EE4A8C22C6999221BA4”,
“description”: “Gift2”,
“graphics”:
[
{
“width”: 400,
“height”: 200,
“quality”: “Low”,
“url”: “https://site/02_201504_003/000C297765971EE4A8C22C6999221BA4Low.jpg”
},
{
“width”: 900,
“height”: 600,
“quality”: “High”,
“url”: “https://site/02_201504_003/000C297765971EE4A8C22C6999221BA4High.jpg”
}
],
“endTime”: 1425168000000,
“activationDate”: null,
“redemption”: null
},

`

For now I use this to get all the offerIds into my 'itemlist:

`

.check(jsonPath("$.membershipCoupons[?(@.membershipId=='${MemberId}')].coupons[?(@.activationDate==null)].offerId").findAll.optional.saveAs("itemList"))

`

Just to test I need to get just the first offered from the json.

Is it possible to have several clauses within the:

`

coupons[?(@.activationDate==null)].offerId

`

I could say:

`

coupons[0].offerId

`

But then I cannot evaluate if the activationdate==null.

could I say:

`

coupons[0?(@.activationDate==null)].offerId

`

or something similar?

Thanks!