currently the workaround is to wrap the webhook in a custom function and set the workflow rule action to execute that function. that enables using CRM vars inside Deluge's `invokeUrl`, something like:
- ...
my_url = zoho.crm.getOrgVariable("my_crm_var_url");
invokeurl - [
- url :my_url
- type :POST
- connection:"myConnection"
- ];
...