Pls help! Can I intercept the process from hook function?

[tslin]

Hi,

Is there any way to intercept the process from hook function?

For example,

 

I have a hook function at hook point "AcceptOrder" - Runs when the accepting the order through the Admin Area or API.

In there, I check some data status from other site.

If the status from other site is "Deny", I want to stop accepting order.

I tried adding "return false" to the function. But it didn't work and order was accepted.

 

WHMCS allowed us to do such things?

 

Thanks in advanced!