Cst purchase to be shown during maharashtra vat return?

Dear All,,

kindly answer my query:

1. I purchase from out of state against "C form" into Maharashtra from delhi (example) but my sales are within maharashtra itself against Vat

Please let me know if we have to show our purchases made in CST 2% against "C form" during vat return if yes, then where in the form do we show it.. 

I am trader so i file dealer return in maharashtra

Thanks in advance