Recalculate Order Total Pricement and all other taxes / prices

[EarzS]

Hello, 

 

My problem is the following:

I have to create a module that when a order is made, certain products in the order must have pricement 0, so the admin can set the prices later. I managed to set the code in "newOrder" hook setting all the order details (products) pricement to 0. However when i try updating the order total pricement it doesn't work, it sets the original total pricement.

 

My question is the following:

 

- Is there a way to make the order recalculate it's total pricement / taxes after updating all the order details via code?

- Is there another order hook that will allow me edit the order total pricement? so i can set it to 0 if the former question is not found? That way i think the order total will be recalculated after the admin sets the new pricements.

 

Any help would be appreciated,

Thanks.