Hello.
i would like to help you as much as i can so here is what you can do:
as long as you don't have the source code for your flash application you can try to decompile it and then you can edit it, instead of creation of new application which is time consuming.
I will recommend you to use Trilix Flash Decompiler. It is not a free, but useful app.
So, if you have the skills, it will be easier for you to read/edit the code. However, if not, you can write me a private message and i will be glad to help.
Good luck!