Confiforms, Decimal Separator of Numerics: How to convert number from ‘comma’ to ‘dot’ notation?

[Manuel_vA]

Goal

Formatting a number that a user inputs from comma format to dot format.

E.g.: Convert 125,55 to 125.55

What does work

The virtual function 'formatNumberWithLocale(de)' works fine when formatting a numeric with a dot as decimal mark to a comma as decimal mark. E.g.: 1.5 -> 1,5 

So this works: [entry.InputField.formatNumberWithLocale(de)]

Problem

But the virtual function 'formatNumberWithLocale(en)' does not work when trying to format a comma as decimal separator to a dot notation. E.g.: 2,5 -> 2.5

This does not work: [entry.InputField.formatNumberWithLocale(en)]

Any help or hints are appreciated. Thank you in advance!

Storage Format

This example should illustrate my problem in 'Storage Format':

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<ac:structured-macro ac:macro-id="f0b25227-1287-41f8-94ff-8bdb34322412" ac:name="panel" ac:schema-version="1">
<ac:rich-text-body>
<p>
<strong>Question</strong>
</p>
<p>Why does the virtual function [entry.commaToDot.formatNumberWithLocale(en)] (located in: PlainView) not transform a comma decimal separator into a dot decimal separator?</p>
<p>E.g: Why is the input '1,5' not formatted into '1.5'</p>
<p>
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</p>
<p>Interesting:</p>
<p>The virtual function  [entry.dotToComma.formatNumberWithLocale(de)]  works: It transforms for example '4.5' into '4,5'.</p>
</ac:rich-text-body>
</ac:structured-macro>
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<ac:structured-macro ac:macro-id="d4690b47-b46b-4b3a-ac05-bbe207074fc8" ac:name="confiform" ac:schema-version="1">
<ac:parameter ac:name="formName">form</ac:parameter>
<ac:rich-text-body>
<p class="auto-cursor-target">
<ac:structured-macro ac:macro-id="bf178309-5d77-4ccf-98b6-c8c7e6e44782" ac:name="confiform-field-definition" ac:schema-version="1">
<ac:parameter ac:name="fieldName">dotToComma</ac:parameter>
<ac:parameter ac:name="fieldLabel">dotToComma</ac:parameter>
<ac:parameter ac:name="fieldDescription">The virtual function 'formatNumberWithLocale(de) works for transofming the decimal seperator fro dot to comma. E.g.: 1.5 -&gt; 1,5</ac:parameter>
<ac:parameter ac:name="type">number</ac:parameter>
</ac:structured-macro>
</p>
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<ac:structured-macro ac:macro-id="9be7b85c-7f5d-4875-b5a9-602103528fa4" ac:name="confiform-field-definition" ac:schema-version="1">
<ac:parameter ac:name="fieldName">commaToDot</ac:parameter>
<ac:parameter ac:name="fieldLabel">commaToDot</ac:parameter>
<ac:parameter ac:name="fieldDescription">But the virtual function 'formatNumberWithLocale(en)' does not work to change the decimal seperator from comma to dot. E.g.: 2,5 -&gt; 2.5</ac:parameter>
<ac:parameter ac:name="type">number</ac:parameter>
</ac:structured-macro>
</p>
<ac:structured-macro ac:macro-id="f74e24e8-71f7-4521-b451-dc270f07d974" ac:name="confiform-entry-register" ac:schema-version="1">
<ac:parameter ac:name="formName">form</ac:parameter>
<ac:parameter ac:name="type">Embedded</ac:parameter>
<ac:parameter ac:name="atlassian-macro-output-type">INLINE</ac:parameter>
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</ac:rich-text-body>
</ac:structured-macro>
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</ac:rich-text-body>
</ac:structured-macro>
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<ac:structured-macro ac:macro-id="26868c63-22fb-401e-b7ec-2167720e95f5" ac:name="confiform-plain" ac:schema-version="1">
<ac:parameter ac:name="formName">form</ac:parameter>
<ac:plain-text-body><![CDATA[[entry.commaToDot.formatNumberWithLocale(en)] | [entry.dotToComma.formatNumberWithLocale(de)] |
]]></ac:plain-text-body>
</ac:structured-macro>
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[Michael Küng]

Any reason for this? Is not working for me as well!