Multiple file upload in Selenium IDE

[Мария Рослякова]

I'm trying to upload multiple files in field

<input type="file" name="files" id="analyzeInputJsonFile" multiple="multiple" style="width:auto;" accept=".json,.zip,.pdf">

but I always get 'WebDriverError: invalid argument:' error.

Here command that I use: 

type | xpath=//input[@id='analyzeInputJsonFile'] | path

I was trying different constructions in path section such as

• "path_to_file1.json"\n"path_to_file1.pdf"
• \"path_to_file1.json\"\\n\"path_to_file1.pdf\"
• \"path_to_file1.json\" \"path_to_file1.pdf\"
• "path_to_file1.json" "path_to_file1.pdf"
• path_to_file1.json;path_to_file1.pdf
• path_to_file1.json,path_to_file1.pdf

but non of these options work.

How does multiple file upload work in Selenium IDE?

Environment:

OS: Windows 10
Selenium IDE Version: 3.12.0
Selenium SIDE Runner Version: 3.12.1
Node version: npm: 6.7.0
Browser: Chrome 75.0.3770.142