YAJLGEN and 'Variable' Named Elements

I'm not sure if I should go back to the vendor and suggest a change in their schema for this, but... I used YAJLGEN utility (which is great) to generate the Data structures to be able to DATA-INTO. A portion of the JSON is below. My issue is with the "010", which is a Register#, gets generated as YAJL_010 as the name of the Data Structure. For this JSON, it could contain information for Registers 001 - 999 (YAJL_001 to YAJL_999). Any ideas on how to not have to create 999 data structures? I know it would have been great if the vendor created an element named Register and store the value in it.

Thanks!!

"NonTillBasedTenders": {
"StoreTotals": {
"CREDIT CARD": {
"VISA": [
{
"CurrencyCode": "USD",
"TransactionCount": 1,
"InAmount": 22.99,
"OutAmount": 0
}
]
}
},
"010": {
"CREDIT CARD": {
"VISA": [
{
"CurrencyCode": "USD",
"TransactionCount": 1,
"InAmount": 22.99,
"OutAmount": 0
}
]
}
}
}