hello, i am trying to use an erc20 token inside an erc1155 contract in remix and i have doubts, at the time of making a "buy" type operation. In this type of operation where I need to buy with my erc20 token within the erc1155 contract, is it necessary that in remix I send money? my erc20 token is not within the 4 options that remix gives you, ether, finney, gway, way....
my doubt is what should i do with that field? do i have to send in any of those 4 types?

thank you