Version Management

Hi,

I am trying to modify a program. After the changes were done I tried to execute the program and it gave me some new errors. To make sure that there is nothing wrong with my code I just want execute the previous code. So I went to uilities -> version Management. There I checked against the previous version and retrieve. What my doubt is this the way to activate the previous version ? Did I go wrong any where ? Moreover when I excuted the previous version I get the same errors which were not arised before .what could be the reason ? I guess some changes in config as the program is BADI(CRM).

Regards,

Varun.