Read only State error

[Mindset]

Hi
I am getting the following error
Error on calling 'OnBarUpdate' method on bar 5: Cannot set a property on object '#FFFFC0CB' because it is in a read-only state.

The object in question is

ChartControl.Dispatcher.InvokeAsync((Action)(() =>
{
Dotp myDraw = DrawPlus.Dotp(this,"dot"+CurrentBar,true,0,myDot[0],dotBrush,myDotSize,Brushes.Transparent);
myDraw.AreaBrush.Opacity = 50;
}));

if I remove the opacity property it works just fine so clearly there's the issue.

Is there any way I can set the opacity?

[NinjaTrader_BrandonH]

Hello Mindset,

Thanks for your post.

You will need to use a SolidColorBrush to define opacity. You also need to create a new brush that is not already created since you can't modify the opacity on an existing brush.

See this forum thread for more information about this error: https://ninjatrader.com/support/foru...40#post1112840

Also, see this help guide page about working with brushes: https://ninjatrader.com/support/help...gcustombrushes

Please let me know if I may assist further.

[Mindset]

Fantastic. Perfect solution.thank you.