I added a regularexpressionattribute property for my textbox. How do I set a value to that property

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VB

ASP.NET

regular-expression

Hi,
So, I have a User Control for a textbox and I have added a RegularExpressionAttribute Property to it. Below is the property I created:

What I have tried:

<pre>Dim _regex As New RegularExpressionAttribute("/[^0-9a-zA-Z-,_.\:\s]+/g")
    <Browsable(True)>
    Public Property Regex() As RegularExpressionAttribute
        Get
            Return _regex
        End Get
        Set(ByVal value As RegularExpressionAttribute)
            _regex = value
        End Set
    End Property

Now, the GET is working fine, but SET doesn't work as expected.

In my aspx page, I'm trying to set the value for that property like below:

<uc1:CheckedTextBox ID="TxtScope" runat="server" Regex-Pattern="/[^0-9a-zA-Z-_.\:\s]+/g"></uc1:CheckedTextBox>

But, I'm not able to set that value to the property. Any idea how to achieve this? Any help would be greatly appreciated.
Thanks!