Saving array into array

Evan, is the id field multiple/array type? I have attached the results using v16.3, if possible do share the sail code.

@abhinavg This is the scenario being conveyed by the user who made the post:

1. Make the testcdt rule input as multiple. Let's say it has two records. Populate it with an array as follows in the Test Inputs: {type!testcdt(integerField:1),type!testcdt(integerField:2)}
2. Now try to save the new values into 'integerField' field as follows:
a!save(ri!testcdt.integerField,{3,4})
You will see 3,3 being pushed into the integerField of testcdt.

@evanr May be you can do something like this:

a!save(
\tri!testcdt,
\tapply(
\ ttype!testcdt(
\ tid:_
\ t),
\ t{3,4}
\t)
)

I don't think there is any problem and as far as I remember, there are few forum posts on this topic.

@sikhivahans, I was thinking in terms of a unary operation.
BTW, using a looping function with type constructor as suggested by you above will get the desired result. Thanks for the correction!