Find Chart Control by it's UniqueID

Hey Guys i'm in the middle of a project that requires that i find one specific Chart Control. I created a function that every time a chart control is created it's uniqueid will be stored to use it later. Normally in a C# application we can find a Control by it's name but on ctrader we have the UniqueID. So I imagined that the code would be similar to this.

TextBox tbx = this.Controls.Find("textBox1", true).FirstOrDefault() as TextBox;
tbx.Text = "found!";