How to start a rule input with data?

I am here totally with mike that more informationen would be helpful, but for the most common cases I had in mind where the following two:

1) within interfaces

a!localveriables(
  local!variable1: "teststring",
  ....
  rule!EXA_SC_ChildInterface(exampleRuleInput: local!variable1)

)

I am here totally with mike that more informationen would be helpful, but for the most common cases I had in mind where the following two:

1) within interfaces

a!localveriables(
  local!variable1: "teststring",
  ....
  rule!EXA_SC_ChildInterface(exampleRuleInput: local!variable1)

)

Hi, what im really trying to do is get the data from de child interface, in the parent interface i have a foreach to show the same child interface per item but with different data because the data showed depends on the info in the item given, so this is working well, but i need to get the data from each interface and append all of them in the parent interface in a local variable, and i tried to pass a ri in the child interface but when i tried to append this ri it doesn't work, the local just recover the data of the interface that im selecting in that moment. if you need to see the code i could share the interfaces :) thank you for your response

i am here with konduru
can you post some parts of your code?

If you have it properly maintained the basic a forEach logic

a!foreach(
    items: ri!values,
    expression: rule!EXA_SC_ChildInterface(parameter1:fv!item)
)