Fetch values from a hash variable

By Hajo Koerts admin, Created 6-MAR-2017, last editted 8-MAR-2017

Hi,

I've got a hash variable in which I receive different values. For example:

{"14":"45",15":"56"}

How can I retrieve the values from the given keys? I've tried the following expression, but no values were returned:

fetch(var:my_hash, var:key_identifier)

Hi, 
I've got a hash variable in which I receive different values. For example:
{"14":"45",15":"56"}
How can I retrieve the values from the given keys? I've tried the following expression, but no values were returned:
fetch(var:my_hash, var:key_identifier)

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