New to Workflow Formula’s In a case where I want to {custbodycs_planned_fill_end_date} + 10 days how would I write that expression so it sets value field for a custom date field?

{custbodycs_planned_fill_end_date} + 10 (assuming the above field is date format)

It is and I tried that but it just returns {custbodycs_planned_fill_end_date} in that new field

What field type is that custbody field, and what field type is the new field.

Just checked and they are both date fields

I've always used {datefield} + 10 and it works fine...what is your trigger set to? Can you send a screen shot of the parameters of the Set field value action?

My state triggers and parameters are attached

Oh I've never gotten calculations to work using the Client triggers. It will work if you use Before Record Submit or After Record submit, but Client triggers seem to have this limitation

So I need to change the state trigger to after record submit for it to take the + 10?

The trigger in your Set Field Value action

Right. Okay. I’ll do that now

You can also use Before Record submit, but essentially would be the same user experience as After Record submit, just less performance impact

So whenever I’m doing calculations like that it can’t be on a client trigger? When would be a scenario of a client trigger?

Correct, it seems like the Server is required to make calculations. CLient Triggers are Before User Edit Before Field Edit After Field Edit After Field Sourcing Before User Submit

This is super helpful. I’m going to read more about it

Here's a post I wrote about it

I am

This one also has a nice table that lays out how each trigger functions as well

I think you can use suitescript in the formula field for clienttriggers.