Fetching using substring

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"abcd.efg.plan.1006746" Hi All, Suppose this is the  format of the name I am receiving through front end form. can I can I only fetch ‘plan’ through it?  Occurence of characters are not fixed. So I want to fetch the letters after second occurrence of ‘ . ‘ and all the characters before third occurrence of ‘ . ‘ in my file name.
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1 answers
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asking the same question twice doesn’t result in a earlier response ;-)

See my answer in your previous post https://forum.mendix.com/link/questions/103039

answered