Partially close à pending order

[Yerim Rayann Gon Diarra]

Hey dear, I have been looking for something to reduce the lot of an pending order.

Let's say I put the a 10 lot buy limit. 

Later on I want to reduced it to a 5 lot buy limit, before it got open. 

It's there a function to do so? 

[Vladislav Boyko]

Delete the order and place a new one.

[Yerim Rayann Gon Diarra]

Vladislav Boyko #:
Delete the order and place a new one.

Thanks