enum undefined

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    var productFrame = app.activeDocument.textFrames.add();
    productFrame.properties =
    {
      strokeWidth : 0,
      fillColor : "None",
      contents : "!",
      flexItemHeightMode: FlexWidthHeightMode.FLEX_FILL
    };

I get the error that “FlexWidthHeightMode is not defined”
What am I missing?

https://www.indesignjs.de/extendscriptAPI/indesign-latest/#TextFrame.html

D

Dirk BeckerCorrect answer

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@rob day Flex was added with version 21

D

Dirk Becker

Legend

Could be that you are using

a versioned script (check app.scriptPreferences.version ?)
an old version (pre 21.0) that does not yet support flex
UXP / UXPSCRIPT without populating the enum from the require()

@Mike Witherell FlexEnum only has FLEX_AUTO.

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Mike Witherell

Community Expert

What happens if you change this line?

flexItemHeightMode: FlexWidthHeightMode.FLEX_FILL

changes to

flexItemHeightMode: FlexEnum.FLEX_FILL

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Mike Witherell

Peter Kahrel

Community Expert

Your code works fine over here on Windows 11 Pro and ID 2026 21.4.

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rob day

Community Expert

Hi @Peter Kahrel , I’m getting the error on MacOS with InDesign 2025 (20.5.1)

var pf = app.activeDocument.textFrames.add();
try {
    pf.flexItemHeightMode = FlexWidthHeightMode.FLEX_FILL;
}catch(e) {
    alert(e)
}

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Peter Kahrel

Community Expert

Looks like a Mac problem then.

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