How to get 'Deletes_Only' Bot on child record to work when you delete a parent record, and all child records are deleted

[weowens1984]

I have three tables.

Table 1: Work Orders (Parent)

Table 2: Work Order Line Items (Child)

Table 3: Inventory

I currently have two bots working using webhooks.
Adds_Only - Whenever a work order line item is created, it adds the qty to the inventory table.
Deletes_Only - If that line item is deleted, it removes the qty from the inventory table.

Here is my JSON text, the Deletes_Only is the same except it subtracts from Qty Produced instead of adding.

{
“Action”: “Edit”,
“Properties”: {
“Locale”: “en-US”,
“Timezone”: “Mountain Standard Time”
},

“Rows”: [
<<START:SELECT(Parts[Part ID],[Description]=[_THISROW].[Product/Part])>>
{

“Part ID”: “<<[Part ID]>>”,
“Qty Produced”: “<<[_THISROW].[Qty]+[Qty Produced]>>”

}
<>
]
}

If I delete a Work Order, it deletes all child records in the Work Order Line Items Table, but the ‘Deletes_Only’ bot does not trigger when this happens.

How do I make a bot that triggers off of the Work Orders table that runs for each child record?

Any help would be much appreciated.

Thanks!