What is the reason that you cannot access the data directly from within the table?
"I want the script such that it reads the variable names A, B, C dynamically, cos these names could vary in the project."
If the names could vary, then magically defining them as variable names will make it difficult to keep track of them (as well as making your code slow, complex, and inefficient). In contrast, keeping them in the table makes it trivial to know what names have been supplied (and very efficient to process them).
What is the reason that you want to introduce latent bugs into your code for no obvious benefit?
