Unable to update schedule parameter of Ad-Hoc Run in OIC using REST API

Unable to update schedule parameter using REST API. Seems it only updates for scheduled run and not for Ad-hoc runs. I tried both true and false for "run-as-schedule" paramter in request but it always updates the schedule run parameters and not Ad hoc runs.

API: /ic/api/integration/v1/integrations/{id}/schedule/parameters

Operation: PATCH

Sample Payload: {  "run-as-schedule": false,  "parameters" : [ {    "name" : "PARAM_1",    "value" : "1"  } ]}