Freedom UI – Validator cannot read lookup-related attributes (model.get undefined)

Hi,

I am implementing a custom validator in a Freedom UI modal page.
The validator needs to compare Pickup Quantity with two lookup-related attributes:

• UsrTotalPendingQuantity
• UsrPickupLimitPerDay

These are loaded through ForwardReference in the data source.

Inside the validator, when I try:

model.get("<attributeName>")

the values are undefined, and console shows:

Model not ready
Pending/Limit not loaded yet

So the validator runs before the ForwardReference attributes are available.

My question:
What is the correct way in Freedom UI to access lookup-related (ForwardReference) attributes inside a validator?
And how can I trigger validation only after the lookup value and its related attributes have finished loading?

Thanks in advance