Read Only Error

[Mindset]

HI
I have an indicator I have been using for a couple of years.
With the latest iteration of NT8 I get this odd error message

Error on calling OnBarUpdate method on Bar 2505 .Cannot set a property on object '#FFFFFF0' because it is in a read only state

It doesn't prevent the indicator from running, working or compiling.

On investigation it's a problem with a color setting specifically

        [XmlIgnore]
        [Display(Name="Dot  Color 1", Order=1, GroupName="Dot Colour Settings")]
        public Brush DotColor1
        { get; set; }
            
        [Browsable(false)]
        public string DotColor1Serializable
        {
            get { return Serialize.BrushToString(DotColor1); }
            set { DotColor1 = Serialize.StringToBrush(value); }
        }​

However I have 3 other Dot Colors in the indiicator all following the exact same coding which don't produce this error.
I have tried changing colors and it always produces the same error. Just on this Dot1.
It seems ok Bar 0 - bar 2504 I think and as I say it doesn't stop the indicator running - just an irritation.
Anyone help shine a light as to what I might have done to cause this error?

thanks

[NinjaTrader_ChelseaB]

Hello Mindset,

Are you trying to modify the brush in OnBarUpdate()?

(If so, you need to clone it, change the clone, and freeze it)

https://ninjatrader.com/support/helpGuides/nt8/index.html?working_with_brushes.htm#Understandingcustombrushes

[Mindset]

Hi Chelsea
No it stays exactly as it's set in SetDefaults.
I simply use the color to define a dot color in OnMarketUpdate
ps your link is broken but I found the resource anyway

[NinjaTrader_ChelseaB]

Hello Mindset,

"I simply use the color to define a dot color in OnMarketUpdate"

Are you defining a brush in OnMarketUpdate or just using the existing brush saved to the variable?

Our IT is aware of the forum links breaking and are looking into the matter. In the meantime we have received reports that using the uBlock origin extension can prevent the malformed URLs.

[Mindset]

Hi
yes just using the pre defined brush

[NinjaTrader_ChelseaB]

Hello Mindset,

What is the specific line of code causing the error?

[Mindset]

I don't know!
However I coded another version which seems to have fixed the problem.
NO idea how or why. as the method coding was unchanged as were the Brush properties. Maybe just a glitch in the Matrix?

[NinjaTrader_ChelseaB]

Hello Mindset,

Debug the script by adding prints before each line to see which print is the last print to appear before the error appears.

https://ninjatrader.com/support/forum/forum/ninjatrader-7/strategy-development-aa/99209-date-conditions-not-working?p=791121#post791121