Need a very easy deluge for field in accounts to sync with field in primary contact

Need a very easy deluge for field in accounts to sync with field in primary contact

Hi,

I have my 2 modules with default names, Accounts and Contacts

I have 1 field in each module named the same (État du compte) with the same API : tat_du_compte

I have tried to use a deluge found here and customise it, I tried maybe 20 possibilities and it never worked.

Both fields are "Pick list" with the exact same entry.

Need help here, thank you