Hi notsomathpro and Bertie,
Firstly it is fine for you to answer this way Bertie.
notsomathpro, you did not do anything wrong either.
We want to work with you to help you nut out your problems. You are older than many of the question askers and it is reasonable for Bertie to ask you to interact with him. So try and talk about the question. What have you tried. Why won't it work etc.
On other forums this is always demanded. On this forum we are often more relaxed but sometimes we are more relaxed than we should be.