Problem for trigger event when I change

Hello !

I've learned somethings about functions, on the link CubeYogi ( nice Website for sure )

But, when I try to do same things I've learned on CubeYogi in my ZohoCRM, blblblblblb.... Don't work.

Can someone help me ?

I explain :

I want to do this thing :

When I enter a date or I change the date on " Date prévisionnelle de dessin " it create an event on the date I've choose.

I've "created" a function based on this link ( I've just changed first lines... )

I understand that the code linked below do this thing. But when I want to change some parts of the code to work with my names of fields... That don't works.

//Replace the correct module API name

deal_module_name = "Deals";

event_module_name = "Events";

//Replace the correct field API name

deal_delivery_date_field_name = "Delivery_Date";

deal_name_field_name = "Deal_Name";

deal_contact_field_name = "Contact_Name";

deal_owner_field_name = "Owner";

common_id = "id";

are called :

Module_Affaires = "Deals";

Module_Events = "Events";

Date_Events = "Date prévisionnelle de dessin";

Nom_Affaire = "Affaire Name";

Nom_Client = "Client Name";

Macha = "Affaire Owner";

common_id = "id";

Oh, yes... I'm French, sorry :) I think it's why I've got problems... Perhaps i've traducted something wrong.

I think I did something wrong.

The code is joined