ICS Mapper-Conditional statements

Summary

ICS Mapper Issue with Choose /when

Content

Hi ,

I have basic requirement to set on /off an element in the target based on a input data of an element.

Lets say: If the Input element is having "A", set the target element to 1, otherwise If the Input element is having " I " set the target element is to 0

I tried to achieve this using ICS Mapper ( Choose and when) but there is no provision to have multiple when inside a choose. 

Please let me know If there are any alternative approaches using mapper.

Here the point to note is , I want to generate the target element only when there is a data in the input payload. Empty nodes should not be generated.