Hi Guys,
I am trying to create a DCA access control module and noticed something . Wondering if someone can shed some light on this
So i have a list and the list has a subset eg below

I have 3 modules
-First one "lets call it module" has above list as "Applies to" with 1 line item "Read" as Boolean and Formula as "True" .
-Second one has Above list as "Applies to" with 1 line item "Line item" as number and Read is set to above module.read . Works no issues
-Third one has subset from above list as Applies to" with 1 line item "Line item" as number and when i try to set Read to module.read i get below error

Why is this happening ? I would have thought this will work as just like lookup
can someone shed some light on this ?
Many thanks