Make the code in OOP style and Add some buttons and Debugging

I have two indicators that I will call data from them in my EA. But they have some errors. One is "array out range", another is "indicator is too slow, rewrite the indicator". Attached the error report. I wanna you can debug the code and make it work smoothly. I think I will get in trouble when coding, so I want you to help me when I couldn't work out by myself.

The two custom indicators is not by myself, so I want them to be arranged in OOP style which can be read easily.

I need to add some buttons or lists on the charts.