Updating Invoice Lines PUT Request doesn't reflect changes

I have attached a screenshot

I have an existing invoice with one line item in it I did a PUT request with 2 new items added but it doesn't get added and no errors was thrown

https://developer.myob.com/api/myob-business-api/v2/sale/invoice/invoice_item/

i'm using this api.

Here is the json for PUT request

{
"Customer": {
"UID": "022e7385-c877-43ce-992d-8ea8936bb3ec"
},
"UID": "6c85f12f-82e3-4141-9555-5556948c400d",
"Lines": [
{
"RowID": 153,
"ShipQuantity": 0,
"UnitPrice": 1650,
"UnitOfMeasure": null,
"UnitCount": 1,
"UnitPriceForeign": null,
"DiscountPercent": 0,
"CostOfGoodsSold": 0,
"Item": null,
"Account": {
"UID": "a59b19ba-bcd8-429c-94a0-3b9fbf2e7703",
"Name": "Sales",
"DisplayID": "4-1400"
},
"Location": null,
"Type": "Transaction",
"Description": "myob supplier - Test - Loan Calculator Reference ID: e6ecb765-3f35-4d6d-8632-f53a745788be",
"Total": 1650,
"TotalForeign": null,
"Job": null,
"TaxCode": {
"UID": "939f5ada-49c7-445f-bee4-0a351c88b073",
"Code": "GST"
},
"RowVersion": "-6397926220633210880"
},
{
"Type": "Transaction",
"Description": "myob supplier - Test - Loan Calculator Reference ID: 29627222-a961-4643-a734-648b00af0377",
"UnitCount": 1,
"UnitPrice": 3000,
"Job": null,
"DiscountPercent": 0,
"TaxCode": {
"UID": "939f5ada-49c7-445f-bee4-0a351c88b073"
},
"Account": {
"UID": "a59b19ba-bcd8-429c-94a0-3b9fbf2e7703"
}
},
{
"Type": "Transaction",
"Description": "myob supplier - Test 3 - Loan Calculator Reference ID: c342c65c-ac18-4d92-8275-ad2e99b9ac08",
"UnitCount": 1,
"UnitPrice": 2500,
"Job": null,
"DiscountPercent": 0,
"TaxCode": {
"UID": "939f5ada-49c7-445f-bee4-0a351c88b073"
},
"Account": {
"UID": "a59b19ba-bcd8-429c-94a0-3b9fbf2e7703"
}
}
]
}