Call Function with CRM

We have a "Product List" app in ZCreator and when we add/edit/delete a line is this app we want this data to push to "Products" module in CRM. I seem to have configured this correctly other than on edit and delete I can not access the unit price field because it is not a string field. I have been editing the app and On Edit -> On Success -> Call Function (Integration Task) with CRM -> Update Recod

Thanks for any help