Webhook Alert not populating variables

Post v14103, webhook-json alert is not populating variables in alert.  

<=14103:

JSON embedded params for method: POST

{"functionParams":\{"mode":"returnjobid","subscriptionName":"production-00","resourceGroupName":"azauto-runbooks","automationAccountName":"azauto-autact","runbookName":"Receive-ObserviumAlert"}

,"runbookParams":{"ALERT_ID":"9827","ALERT_MESSAGE":"up/down","ALERT_STATE":"RECOVER","ALERT_TIMESTAMP":"2025-07-29 09:23:27 -05:00","ALERT_URL":"https://observium.test/device/device=344/tab=alert/alert_entry=9827/","CONDITIONS":"","DEVICE_HOSTNAME":"cyberpower-pdu.test","ENTITY_NAME":"cyberpower-pdu.test","METRICS":"device_status = 1"}}

 

>14104:

JSON embedded params for method: POST

{"functionParams":\{"mode":"returnjobid","subscriptionName":"production-00","resourceGroupName":"azauto-runbooks","automationAccountName":"azauto-autact","runbookName":"Receive-ObserviumAlert"}

,"runbookParams":{"ALERT_ID":"","ALERT_MESSAGE":"","ALERT_STATE":"","ALERT_TIMESTAMP":"","ALERT_URL":"","CONDITIONS":"","DEVICE_HOSTNAME":"","ENTITY_NAME":"","METRICS":""}}