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ravib950399
June 30, 2026
Solved

How to escape special chars - (for example, / \\ ; : " | ? ' [ ] * ).

  • June 30, 2026
  • 3 replies
  • 1 view

Example - 

Validation: Filename cannot contain special characters (for example, / \ ; : " | ? ' < > * ). 

Expression evaluation error: Syntax error. Details: Expression evaluation error : Invalid character found in expression: | 

Best answer by orlandos8991
[deleted]

3 replies

O
orlandos8991Answer
June 30, 2026
[deleted]
    R
    ravib950399Author
    June 30, 2026

    that did not work - need to show the validation message on the screen for fileupload component 


    a!fileUploadField(
    label: "Upload File",
    target: cons!FOLDER_CONSTANT,
    value: ri!uploadedFile,
    saveInto: ri!uploadedFile,

    validations: if(
    and(
    not(isnull(ri!uploadedFile)),
    length(stripwith(ri!uploadedFile.name, "\ / ; : "" | ? ' < > *")) <> length(ri!uploadedFile.name)
    ),
    "Filename cannot contain special characters (for example, / \ ; : " | ? ' < > * )."
    null
    )
    )

      A
      abduls0003
      July 1, 2026

      Hi Ravi,

      You can use regerxreplaceall  function to escape special characters.

      regexreplaceall(
  pattern: "[/ \ ; :  | ?  < > * ]",
  searchString: ri!value,
  replacementString: " "
)

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