fulfillOrder() and closeOrder() doesn't work in CRM 9.0

Hi,

I have customized functionality of fulfillOrder() and cancelOrder() of SalesOrder. So, I have added my JS on Fulfill Order and Cancel Order button using RibbonWorkbench solution.

Following is code for Fulfill/Cancel Order:

function checkQtyAndFulfill()

{

//check some conditions

fufillOrder(); 

}

function checkQtyAndCancel()

{

     //check some conditions

     closeOrder();  

}

fufillOrder():-> This will open dialog of Fulfill Order. This is working fine in Version 8.0,1,2 but doesn't work in Version 9.0

closeOrder():-> This will open dialog of Cancel Order. This is working fine in Version 8.0,1,2 but doesn't work in Version 9.0

Can anybody please suggest me?

Also can anybody please provide the list of such function and replacement list?