OpenIntegrations/docs/en/examples/Slack/UploadFile.txt

    Token   = "xoxb-6965308400114-696804637...";
    Channel = "C06UFNUTKUL";
    File    = "https://openyellow.neocities.org/test_data/document.docx"; // URL, Binary Data or Path to file

    FileName = "megadoc.docx";
    Title    = "NewFile";

    Result = OPI_Slack.UploadFile(Token, File, FileName, Title);

    Result = OPI_Slack.UploadFile(Token, File, FileName, Title, Channel);