Update query in allowed datastore query

Hi All, Is anyone got solution for update datastore using allowed datastore queries in Human Task?
We are able to select using allowed datastore query but update is not happening from Human task.
Is that any swagger page available for workfusion/public/v2/datastores API?

Thanks in advanced.

UPDATE @this SET field=‘value’ WHERE @id=1 //This is to update value using system_id column.

UPDATE ds_DatastoreName SET field=‘upd1’ WHERE column1=‘19’ //To update value using actual table name(ds_ is appended to datastore name to create table name in db). With this we can create join queries as well to get the data.

As of now we can not get update row count back using Returning statement in update query. Any help is appreciated in this.