Those who are still confused about input parameters to actions and output values from actions, just have a look at these examples, these act as a foundation for action input and output values (this is ONE of the many ways, of course there can be other ways of doing the things I have done below).
1) Action output value (value returned by a called action) can be stored in a variable
2) Action output value (value returned by a called action) can be stored in data table column.
3) Action output value (value returned by a called action) can be stored in environment variable.