Hi Team,
I am trying to use automation to calculate a sum of several custom fields, whenever one of them is modified. Result of the sum should appear in "Grand total des indices de risques".
For some reason, I am not successful.
Here are my fields and automations so far :

And my automations


The error I get :

Would any one be so kind to have a look ? What am I missing ?
Thanks a lot beforehand,
Valérie