How to change the ProgressStyle dynamically in WinForms ProgressBarAdv?

private void timer1_Tick(object sender, System.EventArgs e)
{
    if (this.progressBarAdv1.Value<100)
        this.progressBarAdv1.Value++;
    else
        this.progressBarAdv1.Value = 0;
}
private void progressBarAdv1_ValueChanged(object sender, Syncfusion.Windows.Forms.Tools.ProgressBarValueChangedEventArgs e)
{
    if(this.progressBarAdv1.Value >0 && this.progressBarAdv1.Value <15)
    {
        this.progressBarAdv1.ProgressStyle =Syncfusion.Windows.Forms.Tools.ProgressBarStyles.Tube ;
     }
     if(this.progressBarAdv1.Value >15 && this.progressBarAdv1.Value <30)
     {
        this.progressBarAdv1.ProgressStyle =Syncfusion.Windows.Forms.Tools.ProgressBarStyles.Gradient ;
      }
     else if(this.progressBarAdv1.Value >30 && this.progressBarAdv1.Value <50)
     {
        this.progressBarAdv1.ProgressStyle =Syncfusion.Windows.Forms.Tools.ProgressBarStyles.MultipleGradient;
     }
     else if(this.progressBarAdv1.Value >50)
     {
        this.progressBarAdv1.ProgressStyle =Syncfusion.Windows.Forms.Tools.ProgressBarStyles.Image ;
     }
}

Private Sub timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles timer1.Tick
    If Me.progressBarAdv1.Value < 100 Then
       Me.progressBarAdv1.Value += 1
    Else
       Me.progressBarAdv1.Value = 0
    End If
End Sub
Private Sub progressBarAdv1_ValueChanged(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Tools.ProgressBarValueChangedEventArgs) Handles progressBarAdv1.ValueChanged
    If Me.progressBarAdv1.Value > 0 AndAlso Me.progressBarAdv1.Value < 15 Then
       Me.progressBarAdv1.ProgressStyle = Syncfusion.Windows.Forms.Tools.ProgressBarStyles.Tube
    End If
    If Me.progressBarAdv1.Value > 15 AndAlso Me.progressBarAdv1.Value < 30 Then
       Me.progressBarAdv1.ProgressStyle = Syncfusion.Windows.Forms.Tools.ProgressBarStyles.Gradient
    ElseIf Me.progressBarAdv1.Value > 30 AndAlso Me.progressBarAdv1.Value < 50 Then
       Me.progressBarAdv1.ProgressStyle = Syncfusion.Windows.Forms.Tools.ProgressBarStyles.MultipleGradient
    ElseIf Me.progressBarAdv1.Value > 50 Then
        Me.progressBarAdv1.ProgressStyle = Syncfusion.Windows.Forms.Tools.ProgressBarStyles.Image
    End If
 End Sub
End Class