Is there a API to add a optional promotion component

 Hi,

We have a promotion with 3 components (cardinality in bracket: min max default):

CxP 1 (1,1,1)

CxP 2 (1,1,1)

CxP 3 (0,1,0)

SP 1 (0,1,0)

Note:

CxP = customizable product

SP: simple product

the 1st 2 CxP are added automatically with API ApplyPromotion

Now I need to add CxP 3 and SP 1 by script. How do I do that?

Our objective is that the API sets correctly fields "Prod Prom Id" and "Prod Prom Rule Id" like it's done when I add CxP 3 and SP 1 from the Edit Promotion UI.

I was thinking about API "AppendChild" but it's not documented.

Any suggestion?

Thanks,

Matthieu