If you are going to change something in an existing production system, there is the distinct possibility you could make the issue worse
Do not make a change in isolation. Understand the impacts of any changes you are going to make
If you are changing some existing code and do not know what some of the code does, do not change the code until you understand the entire script
Part of this situation has to do with understanding the Data types you are working with so let’s take a look at this first