I need to hide de colapse card button of single cards according to the data input, is this possible?

this is my code, it works fine for the style of de card header, but not to hide de collapse button

<igDP:XamDataCards.Resources>
                <vm:HeaderColorConverter x:Key="headerconv"/>
                <vm:HeaderFontSizeConverter x:Key="fontsconv" />
                <vm:HeaderFontWeightConverter x:Key="fontwconv"/>
                <vm:HeaderAlignmentConverter x:Key="hdralignconv"/>
                <vm:ColapseButtonDisp x:Key="clpsbutton"/>
                <Style TargetType="{x:Type igDP:CardHeaderPresenter}">
                    <Setter Property="Height" Value="30"/>
                    <Setter Property="Foreground" Value="White" />
                    <Setter Property="Background" Value="{Binding DataItem.Encabflag, Converter={StaticResource headerconv}}"/>
                    <Setter Property="FontSize"  Value="{Binding DataItem.Encabflag, Converter={StaticResource fontsconv}}"/>
                    <Setter Property="FontWeight" Value="{Binding DataItem.Encabflag, Converter={StaticResource fontwconv}}"/>
                    <Setter Property="HorizontalAlignment"  Value="{Binding DataItem.Encabflag, Converter={StaticResource hdralignconv}}"/>
                </Style>
                <Style TargetType="{x:Type igDP:CardViewSettings}">
                    <Setter Property="CollapseCardButtonVisibility" Value="{Binding DataItem.Encabflag, Converter={StaticResource clpsbutton}}"/>
                </Style>
                <Style TargetType="{x:Type igDP:CellValuePresenter}"></Style>
                <Style TargetType="{x:Type igDP:LabelPresenter}"
                   x:Key="hiddenLabel">
                    <Setter Property="Visibility"
                        Value="Collapsed" />
                </Style>
            </igDP:XamDataCards.Resources>

and this is the code behind

    Class ColapseButtonDisp
        Implements IValueConverter

        Public Function Convert(value As Object, targetType As Type, parameter As Object, culture As System.Globalization.CultureInfo) As Object _
            Implements System.Windows.Data.IValueConverter.Convert
            Dim EncabFlag As Integer = 0

            If Integer.TryParse(value.ToString(), EncabFlag) Then
                Select Case EncabFlag
                    Case 1
                        Return "Colapsed"
                    Case Else
                        Return "Visible"
                End Select
            End If

            Return Nothing
        End Function

        Public Function ConvertBack(value As Object, targetType As Type, parameter As Object, culture As System.Globalization.CultureInfo) As Object _
            Implements System.Windows.Data.IValueConverter.ConvertBack
            '  throw new NotImplementedException();
            Return value
        End Function

    End Class