Update a single variable on a process instance
PUT {{baseUrl}}/process-instances/:processInstanceId/variables/:variableName
Update a single variable on a process instance.
Sample request body : 
{
    name
: SampleVariable
,
      type
: string
,
      value
: SampleValue
,
    scope
: local
  }
HEADERS
| Key | Datatype | Required | Description | 
|---|---|---|---|
Content-Type | string | 
RESPONSES
status: Created
""