Adds a value to a named value in an event pattern or stream until it ends. Repeats this with new values until the value stream ends.
| name | 
 the named value in the event pattern or stream to multiply.  | 
| value | 
 The value, pattern, stream or array to multiply with. The resulting stream ends when this incoming stream ends.  | 
| pattern | 
 The event pattern or stream within which to multiply the new values.  |