Process Payroll customization

Frappe Framework Customization
2

Try this out ?
Im not sure that by sending docs variable assigns self in python.
The following should work

cur_frm.call({              
	"method": "angola_erp.angola_erpnext.validations.process_payroll.submit_salary_slips1",
	"args": {
             "doc":cur_frm.doc
         },							
	callback: function(r,rt) {
			if (r.message){
				frappe.model.set_value(cdt,cdn,'processa_inss',1);  
			}
		}

	});

@frappe.whitelist()
def submit_salary_slips1(doc):
    print "SUBMETER SALARIOSSSSSSSSS"    
    print doc.start_date    
    return

Hope it helps