Anyone have you ever saw this error ? i couldn't execute another method that has the same code as create method , here's the code for the create method :

def create(self, cr, uid, vals, context=None):
        obj_matrix = self.pool.get("wtc.approval.matrixbiaya")
        vit = obj_matrix.search(cr,uid, [
                                         ("cabang_id", "=", vals["cabang_id"]),
                                         ("form", "=", "Purchase Requisition"),
                                         ("divisi_id", "=", vals["divisi_id"])
                                        ])
        if not vit:
            raise osv.except_osv(('Perhatian !'), ("Cabang & Divisi Tidak Memiliki Matrix Approval"))
        
        data = obj_matrix.browse(cr, uid, vit)
        approval = []
        for x in data :
            approval.append([0, False, {
                             'group_id':x.group_id.id,
                             'cabang_id':x.cabang_id.id,
                             'divisi_id':x.divisi_id,
                             'form':x.form.id,
                             'wewenang':x.limit,
                             'sts':'1',                             
            }])
               
        vals["app_line"] = approval
        return super(approvalpr, self).create(cr, uid, vals, context=context)

then , it is another method :

def wtc_approval_request(self, cr, uid, ids,vals, context=None):
        obj_matrix = self.pool.get("wtc.approval.matrixbiaya")
        line = self.browse(cr, uid, ids, context=context)
        vit = obj_matrix.search(cr,uid, [
                                         ("cabang_id", "=", vals["cabang_id"]),
                                         ("form", "=", "purchase.order"),
                                         ("divisi_id", "=", vals["divisi_id"])
                                        ])
        
        data = obj_matrix.browse(cr, uid, vit)  
        approval = []
        for x in data :
            approval.append([0, False, {
                             'group_id':x.group_id.id,
                             'cabang_id':x.cabang_id.id,
                             'divisi_id':x.divisi_id,
                             'form':x.form.id,
                             'wewenang':x.limit,
                             'sts':'1',                             
            }])

        vals["app_line"] = approval
        return True

the code between two method is the same code , but how i got an error in vals[XXXXXXXX] ??

Thanks in advance ,,