querying throws an error if the key in the object starts with a number. #190

this is the error I am receiving:

"errors": [
{
"message": "Parse error on line 1:\n...ls[0].rateOfReturn.9mCNoload\n-----------------------^\nExpecting 'DOT', 'DOT_DOT', '[', got 'IDENTIFIER'",
"name": "Error",
"stack": "Error: Parse error on line 1:\n...ls[0].rateOfReturn.9mCNoload\n-----------------------^\nExpecting 'DOT', 'DOT_DOT', '[', got 'IDENTIFIER'\n at Parser.parseError (/Users/cxho3/Sandbox/service-virtualization-framework/node_modules/jsonpath/generated/parser.js:166:15)\n at Parser.parser.yy.parseError (/Users/cxho3/Sandbox/service-virtualization-framework/node_modules/jsonpath/lib/parser.js:13:17)\n at Parser.parse (/Users/cxho3/Sandbox/service-virtualization-framework/node_modules/jsonpath/generated/parser.js:224:22)\n at JSONPath._normalize (/Users/cxho3/Sandbox/service-virtualization-framework/node_modules/jsonpath/lib/index.js:198:24)\n at JSONPath.stringify (/Users/cxho3/Sandbox/service-virtualization-framework/node_modules/jsonpath/lib/index.js:168:15)\n at JSONPath.value (/Users/cxho3/Sandbox/service-virtualization-framework/node_modules/jsonpath/lib/index.js:63:31)\n at modifyResponsePayload (/Users/cxho3/Sandbox/service-virtualization-framework/lib/util/modifyGetResultset.js:898:30)\n at Object.selectFromDB (/Users/cxho3/Sandbox/service-virtualization-framework/lib/util/modifyGetResultset.js:1069:27)\n at processTicksAndRejections (internal/process/task_queues.js:95:5)\n at async virtualizeAPI (eval at (/Users/cxho3/Sandbox/service-virtualization-framework/node_modules/mountebank/src/models/responseResolver.js:63:34), :165:58)"
}
]
}

here is the object I am passing in:
{
return {
statusCode: 200,
headers: { "Content-Type": "application/json" },
body: {
"entityId": "a6c93fd4-bf67-b8666eea3232",
"entityName": "CanaFund",
"sourceEntityId": 21168,
"sourceEntityName": "CanaFund",
"source": "Eagle",
"asOfDate": "2021-07-15",
"returnDetails": [
{
"shareClass": "Class C",
"rateOfReturn": {
"name": "clifton",
"address": "string",
"5dCLoad": "five string",
"5dCNoload": "string",
"7dCLoad": "string",
"7dCNoload": "string",
"1mCLoad": "string",
"1mCNoload": "string",
"3mCLoad": "string",
"3mCNoload": "string",
"6mCLoad": "string",
"6mCNoload": "string",
"9mCLoad": "string",
"9mCNoload": "string",
"1yCLoad": "string",
"1yCNoload": "string",

looks like if the key starts with a number, it is now able to parse correctly?
Any suggestions?