Mr Munirathnam
Dont worry nothing adverse will happen if u are appearing and contesting ur case in person... although u ought to know these technical things before filing....
any how u can amend the memo of parties by filing an amended memo of parties and along with that also file an application under order 6 rule 17....CPC....and file ur amended plaint with all necessary changes u want to make.....also mention in ur application that no hardship would be caused if u make such changes to the defendants....and aslo mention the changes u are making in ur application as well that u intend to change X word in para No. Y of you plaint .......etc...and after the amendment/ changes the Para No. Y may be reads as follows....... like that ..
dont withdraw ur case .......on this ground alone....file application o 6 r 17
hope it would solve ur purpose....