I've edited all of the scripts that include code needed for the Bicycle. But I haven't altered any of them pertaining the the bike. What I did was copy and paste but edit the pasted to where it's for another item. But in order to use this item you need to have a specific pokémon in your party. No matter what I do I cannot make it to where if you don't have this pokémon (and new item of course) you cannot access this new item.
In other words, if I wanted to make it a requirement for using the bicycle be that you need a certain pokémon in your party, how would I do this?