Getting string instead of array when using multipart form data

[EngineerMonkey404]

Hello! Im using NestJs and Swagger. Im having this DTO to create documentation.

and this endpoint to create documentation.

so when im creating my object in swagger

i got this object.

There are some properties, like 'categories' or 'companies' which are supposed to be arrays but instead are strings. How can i fix it? Thanks for answer!

[Bekhx]

I have the same issue

[mhdmoh]

I am also having the same issue, did anyone find a solution ?