How to add 10 numbers in a string list using LOOP step?

I try to use pub.math:appendToStringList , but i dont know how to map to get the result…
Already try & error for input, but still didntd get it…

Thank you

Input: inStringList (String List)
Output: value (String)

Flow logic:

MAP – set value=0 –
LOOP over ‘inStringList’
—>MAP (Call pub.math:addInts as a transformer), Mapping should be inStringList=num1, value=num2, value=value