Hello, Madalina,
I know that you want to extract it via calculation stage and String function but there is also other way so that you are aware. There is a business object (digital exchange AVO.Regex) which is used to perform regular expression operation. So you can call that business object with regular expression
"\d*" and it will return all the digits from your string.
Regards,
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Zdeněk Kabátek
Head of Professional Services
NEOOPS
http://www.neoops.com/Europe/Prague
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