Image is not visible for me.
CursorCoordinateGraph text properties are encapsulated(I mean hidden, those are private properties).
But I guess you don't need those properties.
Check the below properties
cursorCoordinateGraph.XTextMapping = x => yourconversion;
cursorCoordinateGraph.YTextMapping = x => yourconversion;
this.cursorCoordinateGraph.CustomXFormat = your custom format;
this.cursorCoordinateGraph.CustomYFormat = your custom format;
If this is not what you are looking for, please attach image again or explain in detail what you are looking for, I will try to help you.