@HaribpAdding to
@PvD_SE's reply, rather than using the "Regex Extract" action in BP's Utility String VBO, you can use the "Regex Replace" action to replace all non numeric characters with blanks. It is one action that passes out the value to one text data item.
If you can't make it out from the image, the parameters are:
Pattern: "[^0-9]"
Input Data: "The123Rain456In789Spain!@#$."
Replacement Data: ""
The Regex pattern "[^0-9]" uses a negative character group
[^] to specify any character not between 0 and 9 (inclusive) in a Unicode codespace.
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Micheal Charron
Senior Manager
RBC
America/Toronto
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Micheal Charron
RBC
Toronto, Ontario
Canada