WorkFlow : Can a condition refer to a field in other module?

WorkFlow : Can a condition refer to a field in other module?

Hi Zoho, 

2nd post, 2 questions. :)

I'm trying to work with workflow without coding custom function. So, in Workflow, when we define the condition, can we refer by # or $ or else symbol to a specific field in other module ?  In this example, when a Call is done, I would like to copy the Calls/Call_Result to Leads/Call_Result.  So, in condition, I need to be sure the Calls is related to a Lead's module.

I know ${xxx} refers to global constant as ${NOTEMPTY}.. So, may any global constant exist to indicate module type?
In other hand, can we refer directly to a specific field trought a combinaison of #{module_name.fieldname} ?
Thanks
Workflow