Hi I was wondering if there was a function or something I could call when a subscription plan is successfully purchased?

Our custom component allows particular groups to post items to a website. Each subscription they will get X amount of points.

Every time a user posts an item, 1 point is subtracted. An additional point is subtracted if a user wants to promote this post.

So what I want to do is when a plan is purchased, depending on the plan, a user will receive so many points (eg 5). I just don't know how to trigger this or extend the CB functionality. I did come across something about an API but couldn't find much documentation about it.

Thanks

Thanks I had a bit of a look in Auto Actions but I wasn't sure how to execute PHP code. I got up to the point of entering PHP code but when I internally executed the action nothing displayed. Is there any examples or tutorials on entering the PHP code or referencing a particular PHP file?

These are the settings:
Global
Triggers: None
Type: Code
User: Manually
User Variable: Variable 1
Access: Everybody

Conditions
N/A

Action Tab
Method: PHP
Code: echo "Hello World";
Return: Tried Silent, echo and var_dump

Parameters
Defaults

I didn't get anything displayed when I clicked on Click to Execute