Is Visible property does not work with regex

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Posted on by tpcolson

I'm trying to use the following to control the visibility of a text warning:

!IsMatch(Self.Text, "^\d+(\.\d{1,2})?$") && !IsBlank(Self.Text)

When text is entered in a (text) Data Card, I want to enforce exactly 0.00, 00.00, or 000.00. For example, only the following examples can be entered:

1.23
12.34
123.45

With the above expression set for the label visible property, I can enter:

1
1.2
1.23
12.34
123.45
12.3
123.4

The label visibility does not trigger, which is the opposite of what I need.

The visibility does trigger when I enter

1.234

It also does not trigger when blank.

What am I missing? I need specific and exact behavior: number of decimals must always be 2, even if it's "1.00" and it must not be blank. No, I cannot use a number input for this card. I'm trying to keep this simple with a warning label with a visibility property.

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WarrenBelz 155,838 Most Valuable Professional on at

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Hi @tpcolson,

Without getting into the Regex part, you need Or || instead of And && here
!IsMatch(Self.Text, "^\d+(\.\d{1,2})?$") || !IsBlank(Self.Text)

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Chriddle 8,708 Super User 2026 Season 1 on at

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@WarrenBelz This is always true:

!IsMatch(Self.Text, "^\d+(\.\d{1,2})?$") || !IsBlank(Self.Text)

The OP's logic looks fine, it's the RegEx.
Although the following looks clearer to me:

Not(IsBlank(TextInput1.Text) || IsMatch(TextInput1.Text, "\d{1,3}\.\d{2}"))

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WarrenBelz 155,838 Most Valuable Professional on at

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Hi @tpcolson,

Must not have had my glasses on - missed the ! . . . I got it working with this
Len(Self.Text) > 0 && !IsMatch(Self.Text,"^\d+\.\d{1,2}$")

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WarrenBelz 155,838 Most Valuable Professional on at

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Hi @tpcolson,

A quick follow-up to see if you received the answer you were looking for. Happy to assist further if not.

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