Vba Work in diferent SAP mods

Hello, please i need help with a vba code, im currently working with iw32 transaction to count materials in te cost centers of the diferent areas, and ive developed a code to simplify this process; however i want to be able to open an amount of sap mods and be able to work with each of them at once, but evry time i open a new mod, the macro keeps on working with the previous one, can anybody help me with this!

Thanks