Watson doesn't get zeros - watson-conversation

Question

Let's say I have a conversation services configured in IBM Watson ready to recognize a number given in words and in pieces. For example, if I have the number 1320, it can be sent as thirteen twenty or thirteen two zero, etc.
In the first case I'll get something like this from a conversation service:
{
// ...
"entities": [
{
"entity": "sys-number",
"location": [
0,
5
],
"value": "13",
"confidence": 1,
"metadata": {
"numeric_value": 13
}
},
{
"entity": "sys-number",
"location": [
6,
12
],
"value": "20",
"confidence": 1,
"metadata": {
"numeric_value": 20
}
}
]
// ...
}
In the second case (thirteen two zero):
{
// ...
"entities": [
{
"entity": "sys-number",
"location": [
0,
5
],
"value": "13",
"confidence": 1,
"metadata": {
"numeric_value": 13
}
},
{
"entity": "sys-number",
"location": [
6,
14
],
"value": "2",
"confidence": 1,
"metadata": {
"numeric_value": 2
}
}
]
// ...
}
The big question here is: Where is my zero?
I know this question has been asked more than once, but none of the answers I found solved my current issues.
I've seen examples where a regular expression could be used, but that's for actual numbers, here I have words and Watson is the one who actually guesses the number.
Is there a way to obtain a third entry in my entities for that zero? or another work arround? or configuration I may be lacking?

Answer 1

I just tried this in Watson Assistant and it now gets the zero. With #sys-numbers enabled my utterance is thirteen two zero and I get these entities back:
entities: [
0: {
entity: "sys-number",
location: [0, 8],
value: "13",
confidence: 1,
metadata: {numeric_value: 13}
}
1: {
entity: "sys-number",
location: [9, 12],
value: "2",
confidence: 1,
metadata: {numeric_value: 2}
}
2: {
entity: "sys-number",
location: [13, 17],
value: "0",
confidence: 1,
metadata: {numeric_value: 0}
}
]
It might be the entities matching has been improved.