#SAIL Hello ! I'm trying some SAIL tutorials, but one

How far did you get into the tutorial? Are you only trying to test the expression? If so, please ensure that you have your rules defined correctly.
rule!ucDynamicFieldsUpdateArray has 3 inputs, and rule!ucDynamicFieldEach has 2 inputs.

Hello, Patty ! As I said above, I tried testing the expression. and also through a process model (both display an error). Yes, I created the required inputs, as described in the recipe. I checked the steps many times and couldn't see where is my mistake.

Can you copy each of your rules and expressions?

Patty, here they are:

ucDynamicFieldsUpdateArray:

=with(
local!newGuestList: updatearray(ri!guests, ri!index, ri!newValue),
if(isnull(local!newGuestList[count(local!newGuestList)]),
local!newGuestList,
append(local!newGuestList, "")
)
)

ucDynamicFieldEach:

=a!textField(
label: if(ri!index=1, "Guest Names", ""),
refreshAfter: "KEYPRESS",
value: ri!guests[ri!index],
saveInto: ri!guests << rule!ucDynamicFieldsUpdateArray(ri!index, ri!guests, _)
)

multipleTextComponents:

=a!formLayout(
label:"SAIL Example: Add Text Components Dynamically",
firstColumnContents: {
/* The guests array is passed to the rule directly, creating a partial function */
a!applyComponents(
function: rule!ucDynamicFieldEach(index: _, guests: ri!guests),
array: 1+enumerate(count(ri!guests))
)
},
buttons: a!buttonLayout(
primaryButtons: a!buttonWidgetSubmit(label: "Submit")
)
)

It looks like your expression for "multipleTextComponents:" is missing the load function:
=load(
local!guests: {""},
a!formLayout(
label:"SAIL Example: Add Text Components Dynamically",
firstColumnContents: {
/* The guests array is passed to the rule directly, creating a partial function */
a!applyComponents(
function: rule!ucDynamicFieldEach(index: _, guests: local!guests),
array: 1+enumerate(count(local!guests))
)
},
buttons: a!buttonLayout(
primaryButtons: a!buttonWidgetSubmit(label: "Submit")
)
)
)

Yes, but it's on purpose. As I couldn't get it to work as a rule, I created a process model to test it. And followed the steps of the recipe
(To write your data to process
1.Create rule input: guests (Text Array)
2.Remove the load() function
3.Delete local variable: local!guests
4.In your expression, replace: local!guests with ri!guests
5.In your process model, create variables: guests (Text Array) with no value

On a start form, create process parameters

6.In your process model, update your SAIL Form definition with:

On a start form: =rule!sailRecipe(guests: pv!guests) )

Patty, thanks a lot !

I did the change you suggested and the rule is now working, but I can't save the multiple inputs into a process variable.

Do you know what may be the problem ?

I created a text array input and a text array process variable to save it.

Thanks in advance.