Jsonpath standard expression not working [urgent trial version]

hello ,

this expression is not working on soap ui pro :

$[(@.code=2)].codePays

the expected value is 'FR'

[
{
"codePays": "FR",
"code": "2",
"libelle": "COLIS (CARTON, FARDEAU)",
"libelleReduit": "Col",
"numOrdre": 1,
"indAchat": 1,
"indVente": 0
},
{
"codePays": "FR",
"code": "3",
"libelle": "PALETTE / BOX",
"libelleReduit": "Pal",
"numOrdre": 5,
"indAchat": 1,
"indVente": 0
}

]

but I have an error in soap ng pro : assertion failed for path [$[(@.code=2)].codePays] : numberFormatException:For input string : "$[(@.code=2)].codePays"

it's working fine on the web site http://ashphy.com/JSONPathOnlineEvaluator/ (where I'm testing the json path expression)

thanks to help me