There are two way to put return value
1. use "action:Set a return value", it could put return value in a hash table, so that it could return more then one value.
2. use "action:Set result", it only return one value. This action is used for the "expression:Call" mostly, since expression only could return one value,
The "action:Execute commands" could execute more then one function call by passing a string.
See first post of this thread for more detail.