shile

I added my query inside _config() and now it is working.I couldnt get it to work inside _metadata(). I have another question if you would be kind to answer,when i set a product to be billed monthly how do i set up my third party gateway to bill the client?Considering that i dont have any credit card informations about the user,how is this supposed to be done?

I have tried this,but it is not working...

Hi, I just started developing a custom third party gateway and i encountered a few issues.How can i CREATE and DROP a certain table on gateway activation and deactivation?(I searched through the documentation and i found _activate and _deactivate hooks but they are for modules and is not working for payment gateways) Another thing that i cant find is- where and how do i redirect a user after the third party gateway hits my callback file? Thanks.