Key is a string, value can be number or string.
The parameter of "expression:Hash.At" is a fully key string. ex "a.b.c0".
"expression:Hash.Entry" need to used with "action:Set current entry". For example, value in key string "a.b.c0" can spite to "a.b" and "c0".
- Using "action:Set current entry" to set current entry to "a.b"
- Using "expression:Hash.Entry" by "c0"
"expression:Hash.Entry" might make user confused, how about deprecating it?