Assign smart list entry name to text member

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Hello, is there any way to reach out the idea I mentioned on the tittle?
So, I have 2 members:

Account1 is smartlist data type (could be manual entry or from members)

Account2 is text data type member

I want to get Account2 = Account1 …. where Account1 needs to give the entry name (again, whatever is manual entry or from members) and Account2 get the string

I tried with [[PlanningFunctions.getIdForString()]] , but as far as I know the parameter does not accept formulas, just string between quotes.

I suspect groovy is the solution but would like to know if there is some solutions directly in essbase.