How to create custom search properties for Custom control in coded UI

Hi ,

i have created a  custom control in WPF . i need to provide coded UI support for this control.using MSDN link i havae created a codedUI extention. but my properties are not shown in  coded UI map panel. while search the control using this custom properties its not shows any error in  editor . while running the script it shows  below the exception, i am using UIA technology

Result Message:
Test method CodedUITestProject.CodedUITest1.TestWithCellValue threw exception: 
System.ArgumentException: The property CellValue is not a valid search property.

please help me to resolve this exception , thanks in advance

i need the output like below image